Latest / Boring Science / Boring Science For Sleep _ WEIRD Paradoxes of The Quantum Realm

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Boring Science For Sleep _ WEIRD Paradoxes of The Quantum Realm · Boring Science

• 0:00
  Speaker 1: The day is finally over and the demanding logic of
• 0:04
  Speaker 1: the sun has faded into the quiet of the night.
• 0:07
  Speaker 1: Settle in and let the weight of the blanket anchor
• 0:11
  Speaker 1: you to the mattress. You might feel solid right now,
• 0:15
  Speaker 1: heavy and unmoving, but that is just a comforting illusion.
• 0:20
  Speaker 1: Deep down beneath the skin and the sheets, your atoms
• 0:24
  Speaker 1: are behaving in ways that defy all common sense. Welcome
• 0:29
  Speaker 1: to the Midnight Shift with the Sleepless Scientist. Tonight, we're
• 0:33
  Speaker 1: going to explore the paradoxes of the quantum realm. Not
• 0:37
  Speaker 1: to solve them, but to let their strange, fuzzy nature
• 0:42
  Speaker 1: lull you into a heavy rest. It is a place
• 0:45
  Speaker 1: where particles can be in two places at once, and
• 0:48
  Speaker 1: where walls are merely suggestions. But the math can wait
• 0:52
  Speaker 1: for tomorrow. For now, just listen to the hum of
• 0:56
  Speaker 1: the universe. and let the uncertainty wash over you. Let
• 1:01
  Speaker 1: us step into the laboratory of your mind. It is
• 1:05
  Speaker 1: not the bright, sterile lab of a daytime documentary with
• 1:09
  Speaker 1: lens flares and upbeat electronic music. No, this is the
• 1:15
  Speaker 1: Midnight Lab. The lights are dimmed low, casting long shadows
• 1:21
  Speaker 1: against the brushed concrete walls. The only sound is the rhythmic,
• 1:27
  Speaker 1: mechanical hum of a cooling fan spinning inside a server
• 1:31
  Speaker 1: rack in the corner, a white noise that fills the
• 1:36
  Speaker 1: room like a heavy gas. On the slate desk in
• 1:40
  Speaker 1: front of you sits a ceramic mug of coffee that
• 1:44
  Speaker 1: you poured hours ago. It is cold now. A thin,
• 1:50
  Speaker 1: oily film has formed on the surface, a testament to
• 1:54
  Speaker 1: the inevitable march of thermodynamics. you might look at that
• 1:58
  Speaker 1: cold coffee and think it is still. It sits there,
• 2:03
  Speaker 1: a black pool of caffeine and regret, seemingly motionless. But
• 2:08
  Speaker 1: that is the lie of the macroscopic world. If you
• 2:11
  Speaker 1: were to shrink down, dissolving your consciousness into something smaller
• 2:16
  Speaker 1: than a grain of pollen, smaller than a virus, you
• 2:21
  Speaker 1: would see that the coffee is a violent, chaotic riot.
• 2:26
  Speaker 1: The water molecules are crashing into each other at hundreds
• 2:29
  Speaker 1: of miles per hour, vibrating with kinetic energy even as
• 2:33
  Speaker 1: the liquid cools. This is the thermal jitter, the background
• 2:39
  Speaker 1: noise of existence. Nothing is ever truly still. Even the
• 2:44
  Speaker 1: pillow beneath your head, which feels so stable and cool,
• 2:49
  Speaker 1: is buzzing with atomic vibration. The cotton fibers are made
• 2:54
  Speaker 1: of cellulose chains, And within those chains, carbon and oxygen
• 2:59
  Speaker 1: atoms are dancing a jittery waltz that never ends. You
• 3:05
  Speaker 1: are resting your head on a swarm of motion. But tonight,
• 3:10
  Speaker 1: we are going to go deeper than just vibrating atoms.
• 3:13
  Speaker 1: We are going to descend into the basement of reality,
• 3:17
  Speaker 1: down to the quantum level, where the rules of physics
• 3:21
  Speaker 1: stop acting like strict laws and start acting like casual suggestions.
• 3:27
  Speaker 1: The deeper we go, the stranger the neighborhood becomes. In
• 3:33
  Speaker 1: the daylight world, if you throw a tennis ball at
• 3:36
  Speaker 1: a wall, it bounces back. That is reliable. That is
• 3:41
  Speaker 1: classical physics. It is the physics of car crashes and
• 3:45
  Speaker 1: falling apples, and why you shouldn't jump off a roof.
• 3:49
  Speaker 1: But down here, in the subatomic basement, Things are different
• 3:57
  Speaker 1: down here. If you throw a tennis ball at a wall,
• 4:01
  Speaker 1: sometimes it bounces back, sometimes it decides it was actually
• 4:05
  Speaker 1: on the other side of the wall the whole time.
• 4:08
  Speaker 1: Imagine for a moment that we can cool this laboratory down.
• 4:13
  Speaker 1: We are going to lower the temperature, stripping away the heat,
• 4:17
  Speaker 1: stripping away the energy. We turn a dial and the
• 4:21
  Speaker 1: room drops to freezing. then past the temperatures of an
• 4:25
  Speaker 1: Antarctic winter, then past the temperature of deep space, we
• 4:31
  Speaker 1: are approaching absolute zero, negative 273.15 degrees Celsius. At this temperature,
• 4:43
  Speaker 1: the chaotic dance of the atoms begins to slow. The
• 4:47
  Speaker 1: frantic vibrating of the coffee molecules calms down. The air
• 4:52
  Speaker 1: in the room turns into a liquid then a solid,
• 4:55
  Speaker 1: falling as nitrogen snow. It is a quiet unlike anything
• 5:01
  Speaker 1: you have ever heard. In the real world, silence is
• 5:06
  Speaker 1: just the absence of noise, but here, near absolute zero,
• 5:11
  Speaker 1: silence is the absence of motion. It is a deep,
• 5:15
  Speaker 1: heavy stillness where time itself seems to get sluggish, like
• 5:21
  Speaker 1: syrup pouring on a winter morning. In this extreme cold,
• 5:26
  Speaker 1: we encounter the first strange comfort of the quantum realm.
• 5:30
  Speaker 1: Identity starts to dissolve. When atoms get cold enough, they
• 5:36
  Speaker 1: stop acting like individuals. They lose their distinct edges. They
• 5:41
  Speaker 1: clump together into a single state of matter called a
• 5:44
  Speaker 1: Bose-Einstein condensate. Imagine a crowded room where suddenly everyone stops
• 5:51
  Speaker 1: being an individual person. and melts into a single collective consciousness.
• 5:56
  Speaker 1: That is what happens to matter. It is a cosmic
• 6:00
  Speaker 1: mosh pit where you are the floor and the floor
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  Speaker 1: is you. It is a terrifying thought for the ego,
• 6:08
  Speaker 1: but a relaxing one for the weary mind. Down here,
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  Speaker 1: there is no pressure to be unique. There is no
• 6:16
  Speaker 1: pressure to stand out. You are just a waveform overlapping
• 6:21
  Speaker 1: with everything else resting in the lowest possible energy state.
• 6:26
  Speaker 1: A great, cold slumber of the elements. But we cannot
• 6:32
  Speaker 1: stay in the freezer forever. We have to turn the
• 6:34
  Speaker 1: dial back up, let the heat return, and watch the
• 6:38
  Speaker 1: particles wake up and start their nonsense again. While your
• 6:42
  Speaker 1: coffee grows cold on the desk, the particles within the
• 6:46
  Speaker 1: mug are beginning to behave in ways that would ruin
• 6:49
  Speaker 1: a physicist's evenings. Let us look at light. You have
• 6:53
  Speaker 1: probably been told that light is a wave, or maybe
• 6:58
  Speaker 1: you heard it is a particle. The truth is, light
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  Speaker 1: is an erotic mess that cannot make up its mind.
• 7:06
  Speaker 1: This brings us to the most famous, and perhaps the
• 7:09
  Speaker 1: most frustrating, experiment in the history of science. The double-slit experiment.
• 7:18
  Speaker 1: Visualize a dark room. It is completely pitch black, save
• 7:24
  Speaker 1: for a single sophisticated device sitting on a table. It
• 7:28
  Speaker 1: is a gun, but not the kind that fires lead.
• 7:33
  Speaker 1: This is a photon gun. It is designed to fire
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  Speaker 1: a single particle of light at a time. Just one
• 7:41
  Speaker 1: tiny packet of energy. A lonely spark in the dark.
• 7:47
  Speaker 1: In front of this gun, we have placed a barrier.
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  Speaker 1: A simple plate of metal with two vertical slits cut
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  Speaker 1: into it. Two narrow doorways, side by side. Behind the
• 7:59
  Speaker 1: barrier is a detector screen that will light up whenever
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  Speaker 1: a photon hits it. Now, engage your common sense. If
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  Speaker 1: you were standing there with a handful of marbles and
• 8:12
  Speaker 1: you threw them at the two slits, some would bounce
• 8:16
  Speaker 1: off the metal and some would go through. On the
• 8:20
  Speaker 1: wall behind, you would expect to see two piles of marbles.
• 8:25
  Speaker 1: One pile behind the left slit and one pile behind
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  Speaker 1: the right slit. This is logic. This is how the
• 8:35
  Speaker 1: world works when you are driving a car or pouring sand. So,
• 8:41
  Speaker 1: we turn on the photon gun. Click. One particle fires.
• 8:47
  Speaker 1: It passes through a slit and hits the back screen. Click,
• 8:52
  Speaker 1: another one. Click, another. We sit in the dark, listening
• 8:57
  Speaker 1: to the slow, rhythmic firing of the machine. It is
• 9:01
  Speaker 1: a hypnotic sound, like a clock ticking in an empty house.
• 9:07
  Speaker 1: We let it run for an hour, sipping our cold coffee,
• 9:11
  Speaker 1: waiting for the pattern to build up. When we finally
• 9:14
  Speaker 1: check the screen, we expect to see two bands of
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  Speaker 1: light corresponding to the two slits, but we do not. Instead,
• 9:25
  Speaker 1: we see a series of many bands, light and dark,
• 9:31
  Speaker 1: light and dark, rippling out across the screen. It looks
• 9:35
  Speaker 1: like the pattern ripples make in a pond when you
• 9:38
  Speaker 1: throw two stones in at once. The waves interfere with
• 9:43
  Speaker 1: each other. Where two crests meet, they get bigger. Where
• 9:48
  Speaker 1: a crest meets a trough, they cancel out. This means
• 9:53
  Speaker 1: the light is behaving like a wave. It went through
• 9:56
  Speaker 1: both slits at the same time, interfered with its and
• 10:01
  Speaker 1: landed on the screen. But wait, we fired them one
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  Speaker 1: by one. A single particle. How can a single particle
• 10:11
  Speaker 1: go through two different doors at the exact same time?
• 10:14
  Speaker 1: How can one tiny speck of It is like you
• 10:20
  Speaker 1: walking through your front door and your back door simultaneously
• 10:24
  Speaker 1: and then high-fiving yourself in the living room. It should
• 10:29
  Speaker 1: not be possible. This is the first true headache of
• 10:33
  Speaker 1: the night. The particle exists in a state of probability.
• 10:39
  Speaker 1: Until it hits the screen, it is not really a
• 10:42
  Speaker 1: thing in a specific place. It is a ghost. It is...
• 10:47
  Speaker 1: a smear of possibility. It is everywhere and nowhere. It
• 10:54
  Speaker 1: travels through the left slit, the right slit, neither, and both,
• 11:00
  Speaker 1: all at once. But here is where the universe gets shy. Physicists,
• 11:08
  Speaker 1: being control freaks, decided they wanted to know which slit
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  Speaker 1: the photon actually went through. So they put a sensor
• 11:17
  Speaker 1: right next to the slits, a tiny quantum camera to
• 11:21
  Speaker 1: watch the door and say, aha, it went through the
• 11:25
  Speaker 1: left one. So we set up the experiment again. The
• 11:30
  Speaker 1: dark room, the photon gun, the metal plate. But this time,
• 11:36
  Speaker 1: we are watching. We turn on the machine. Click, click, click.
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  Speaker 1: The photons fly. The sensor beeps. recording which path each
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  Speaker 1: particle takes. Left, right, right, left. We feel smug. We
• 11:57
  Speaker 1: have caught nature in the act. We know where the
• 12:02
  Speaker 1: light is going, but when we look at the back
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  Speaker 1: screen to see the pattern, our hearts sink. The interference
• 12:10
  Speaker 1: pattern is gone. The ripples have vanished. Instead, There are
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  Speaker 1: just two boring bands of light, two piles of marbles.
• 12:21
  Speaker 1: By simply watching the particle, we forced it to choose.
• 12:25
  Speaker 1: We bullied it into acting like a solid object. The
• 12:29
  Speaker 1: moment we looked, the wave collapsed. The ghost became a
• 12:34
  Speaker 1: grain of sand. This is the observer effect. It suggests
• 12:39
  Speaker 1: that the universe changes its behavior depending on whether or
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  Speaker 1: not it is being watched. Think about that as you
• 12:47
  Speaker 1: lie in the dark. The chair in the corner of
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  Speaker 1: your room. The shoes by the door. The dust motes
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  Speaker 1: floating in the air. Are they really there, in the sharp,
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  Speaker 1: defined way you think they are? Or are they just
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  Speaker 1: fuzzy waves of probability, waiting for your eye to interact
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  Speaker 1: with them so they can snap into position? It gives
• 13:11
  Speaker 1: a whole new meaning to the phrase, out of sight.
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  Speaker 1: out of mind. In the quantum world, out of sight
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  Speaker 1: means out of reality, or at least, reality becomes a
• 13:24
  Speaker 1: very loose concept. It is as if the universe is
• 13:29
  Speaker 1: a video game that only renders the graphics when you
• 13:33
  Speaker 1: turn your character to look. Behind you, the world is
• 13:37
  Speaker 1: just wireframes and code. This duality, this refusal of light
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  Speaker 1: to be just one thing is a lot like the
• 13:46
  Speaker 1: flickering of a distant neon sign in a rainy alleyway.
• 13:51
  Speaker 1: You know the kind. A lonely, open sign buzzing in
• 13:56
  Speaker 1: the window of a diner at three in the morning.
• 13:59
  Speaker 1: Sometimes the gas inside the tube glows steady and bright.
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  Speaker 1: A wave. Sometimes it flickers and spits. Individual sparks jumping
• 14:09
  Speaker 1: across the gap. Particles. It is both. And it is neither.
• 14:15
  Speaker 1: It depends on the voltage, the temperature, the age of
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  Speaker 1: the glass. The photon is just as indecisive. It has
• 14:24
  Speaker 1: stage fright. When it is alone in the dark, it
• 14:28
  Speaker 1: dances freely, flowing like water. But the moment the audience
• 14:33
  Speaker 1: lights come on, it freezes, stands at attention, and acts
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  Speaker 1: like a proper little soldier of matter. If light cannot
• 14:42
  Speaker 1: decide what it is, then the objects we touch are
• 14:46
  Speaker 1: far less solid than they appear. The atoms in your hand,
• 14:50
  Speaker 1: the atoms in the sheet covering you, they are all
• 14:54
  Speaker 1: made of these indecisive particles. You are built from billions
• 14:59
  Speaker 1: of tiny ghosts that only pretend to be solid because
• 15:03
  Speaker 1: there are so many of them doing it at once.
• 15:06
  Speaker 1: This leads us to a very crowded, very uncomfortable box.
• 15:11
  Speaker 1: If a single particle can be in two states at once,
• 15:15
  Speaker 1: a wave and a particle, here and there, what happens
• 15:20
  Speaker 1: if we scale that up? What happens if we take
• 15:23
  Speaker 1: that quantum weirdness and apply it to something we can see,
• 15:28
  Speaker 1: something we can pet? Enter Erwin Schrödinger, an Austrian physicist
• 15:33
  Speaker 1: who in 1935 came up with a thought experiment that
• 15:37
  Speaker 1: has been keeping cat lovers awake for nearly a century.
• 15:42
  Speaker 1: Schrodinger did not actually put a cat in a box.
• 15:45
  Speaker 1: He was a theoretical physicist, which means he did his
• 15:50
  Speaker 1: damage with a pen and paper, not with actual animals.
• 15:54
  Speaker 1: But the scenario he crafted is the perfect bedtime story
• 15:59
  Speaker 1: for the cynical realist. Here is the setup. We have
• 16:03
  Speaker 1: a sealed steel chamber. A heavy lead-lined box. You cannot
• 16:10
  Speaker 1: see inside. You cannot hear inside. It is completely cut
• 16:15
  Speaker 1: off from the rest of the universe. Inside this box,
• 16:20
  Speaker 1: we place a few items. First, a Geiger counter, a
• 16:25
  Speaker 1: device that detects radiation. Second, a tiny amount of a
• 16:29
  Speaker 1: radioactive substance so small that in the course of an hour,
• 16:34
  Speaker 1: there is a 50-50 chance that one of the atoms
• 16:37
  Speaker 1: will decay and release a particle. Just one atom. If
• 16:42
  Speaker 1: the atom decays, the Geiger counter detects it. The counter
• 16:47
  Speaker 1: is rigged to a hammer. If the counter clicks, the
• 16:50
  Speaker 1: hammer drops. Beneath the hammer is a flask of hydrocyanic acid. Poison.
• 16:58
  Speaker 1: If the hammer drops, the flask shatters, the poison is released, and, well,
• 17:05
  Speaker 1: it is a bad day for the occupant of the box.
• 17:08
  Speaker 1: The occupant is a cat. let us call him Mittens. So,
• 17:15
  Speaker 1: we seal the box, we set a timer for one hour,
• 17:19
  Speaker 1: and we wait. During that hour, we are outside the box,
• 17:24
  Speaker 1: sitting in our midnight lab, listening to the fan hum.
• 17:28
  Speaker 1: We have no way of knowing what has happened inside.
• 17:32
  Speaker 1: Remember the rule of the quantum realm. Until you measure it,
• 17:37
  Speaker 1: The particle is in a state of probability. The atom
• 17:41
  Speaker 1: has both decayed and not decayed. It is a wave
• 17:46
  Speaker 1: of possibility. Because the atom drives the Geiger counter, and
• 17:52
  Speaker 1: the counter drives the hammer, and the hammer drives the poison,
• 17:57
  Speaker 1: the state of the cat is entangled with the state
• 18:00
  Speaker 1: of the atom. According to quantum mechanics, until we open
• 18:05
  Speaker 1: the box, And look, Mittens is not dead. He is
• 18:11
  Speaker 1: not alive either. He is in a state of superposition.
• 18:16
  Speaker 1: He is both dead and alive at the same time.
• 18:20
  Speaker 1: The universe has not decided yet. This is the deglamorized
• 18:26
  Speaker 1: reality of superposition. It is not a magical state of
• 18:31
  Speaker 1: being everywhere. It is a state of existence that is
• 18:34
  Speaker 1: essentially a cosmic shrug. The universe is saying, I don't
• 18:40
  Speaker 1: know and I won't know until you force me to check.
• 18:44
  Speaker 1: This concept is deeply disturbing to our human brains. We
• 18:49
  Speaker 1: live in a binary world. You are awake or you
• 18:54
  Speaker 1: are asleep. The light is on or it is off.
• 18:58
  Speaker 1: The cat is purring or it is decomposing. We do
• 19:04
  Speaker 1: not like the middle ground. The middle ground feels like madness.
• 19:13
  Speaker 1: But in the math of the quantum world, that middle
• 19:16
  Speaker 1: ground is the only place that matters. Imagine the box
• 19:20
  Speaker 1: sitting there on the table. It is heavy, cold steel. Inside,
• 19:27
  Speaker 1: there is a reality that is blurry. It is like
• 19:30
  Speaker 1: a photograph that hasn't finished developing. The cat is a
• 19:35
  Speaker 1: ghost suspended between two destinies. Now, extend that thought to
• 19:42
  Speaker 1: your own life. How many boxes are sealed around you
• 19:46
  Speaker 1: right now? The email you sent? that hasn't been read yet?
• 19:51
  Speaker 1: Is the recipient angry or happy? Until they read it,
• 19:56
  Speaker 1: they are both. The lottery ticket in the trash can,
• 20:01
  Speaker 1: is it a winner or a loser? Until you check
• 20:04
  Speaker 1: the numbers, it is a piece of paper worth millions
• 20:08
  Speaker 1: and zeros. simultaneously. There is a strange philosophical comfort in this.
• 20:14
  Speaker 1: We worry so much about outcomes. We stress about the future.
• 20:19
  Speaker 1: But the quantum realm tells us that the future is
• 20:23
  Speaker 1: not written in stone. It is not even written in ink.
• 20:27
  Speaker 1: It is written in smoke. Until a choice is made,
• 20:31
  Speaker 1: until an observation occurs, every possibility is still breathing. The
• 20:37
  Speaker 1: bad outcome has not happened yet. The good outcome has
• 20:42
  Speaker 1: not happened yet. They are just potential floating in the dark. Eventually, though,
• 20:49
  Speaker 1: we have to open the box. The hour is up.
• 20:53
  Speaker 1: We lift the heavy steel lid. The hinges creak. We
• 20:58
  Speaker 1: peer inside. Instantly, the wave function collapses. The blurriness snaps
• 21:05
  Speaker 1: into focus. Nature is forced to choose. We see either
• 21:09
  Speaker 1: a living, breathing cat looking very annoyed, or we see
• 21:13
  Speaker 1: a tragedy. But we never see both. The act of
• 21:18
  Speaker 1: looking forced the universe to make up its mind. Schrödinger
• 21:23
  Speaker 1: actually hated this interpretation. He came up with the cat
• 21:27
  Speaker 1: example to show how absurd quantum mechanics was. He wanted
• 21:32
  Speaker 1: to say, Look how stupid this is. Obviously a cat
• 21:36
  Speaker 1: can't be both dead and alive. He was trying to
• 21:40
  Speaker 1: mock the theory, but the joke was on him. The
• 21:44
  Speaker 1: more we tested the math, the more we realized that
• 21:48
  Speaker 1: while it is absurd for a cat, it is absolutely
• 21:52
  Speaker 1: true for the particles that make up the cat. But
• 21:56
  Speaker 1: even if we leave the cat alone, letting the poor
• 21:59
  Speaker 1: thing exist in its dual state, The particles themselves are
• 22:03
  Speaker 1: having conversations across the universe without ever saying a word.
• 22:09
  Speaker 1: This brings us to a phenomenon that Einstein called spooky
• 22:13
  Speaker 1: action at a distance. He did not call it that
• 22:17
  Speaker 1: because he was trying to be poetic. He called it
• 22:20
  Speaker 1: that because he was genuinely creeped out. It offended his
• 22:26
  Speaker 1: sense of order. Einstein liked rules. He liked speed limits.
• 22:32
  Speaker 1: He believed that nothing could travel faster than the speed
• 22:36
  Speaker 1: of light. If something happened over here, it would take
• 22:40
  Speaker 1: time for the news to travel over there. But the
• 22:43
  Speaker 1: quantum world does not care about Einstein's feelings. Let us
• 22:48
  Speaker 1: talk about entanglement. This is the idea that two particles
• 22:54
  Speaker 1: can share a single soul across light-years of empty space.
• 23:01
  Speaker 1: Imagine we have two electrons, we bring them together in
• 23:05
  Speaker 1: our lab, let them interact, and through a delicate dance
• 23:10
  Speaker 1: of physics, they become entangled. Their properties are now linked.
• 23:16
  Speaker 1: For example, electrons have a property called spin. It is
• 23:22
  Speaker 1: not exactly spinning like a top, but for the sake
• 23:26
  Speaker 1: of our midnight visualization, Let's say it is. One spins
• 23:32
  Speaker 1: up and the other spins down. Because they are entangled,
• 23:37
  Speaker 1: they must always have opposite spins. If one is up,
• 23:41
  Speaker 1: the other must be down. It is a law of conservation.
• 23:46
  Speaker 1: The universe keeps the books balanced. Now, we separate them.
• 23:52
  Speaker 1: We put one electron in a trap here in our lab.
• 23:56
  Speaker 1: We put the other electron in a rocket ship and
• 23:59
  Speaker 1: send it to the other side of the galaxy. Let's say,
• 24:03
  Speaker 1: to a lab on a planet orbiting Proxima Centauri, four
• 24:08
  Speaker 1: light years away. So, we wait four years for the
• 24:13
  Speaker 1: ship to arrive. Now, we have one electron here, hovering
• 24:18
  Speaker 1: in a magnetic field in front of us, and we
• 24:21
  Speaker 1: have its partner four light years away, sitting in an
• 24:26
  Speaker 1: alien lab. Here is the spooky part. Remember, until we
• 24:32
  Speaker 1: measure them, these particles are in superposition. They are spinning
• 24:38
  Speaker 1: both up and down at the same time. They are undecided.
• 24:46
  Speaker 1: But the moment, the exact nanosecond, we measure our electron
• 24:51
  Speaker 1: here on Earth, something impossible happens. Let's say we look
• 24:56
  Speaker 1: at our electron and we find it is spinning up. Instantly.
• 25:01
  Speaker 1: Faster than the speed of light. Faster than a text message.
• 25:05
  Speaker 1: Faster than instantaneous. The electron at Proxima Centauri decides to
• 25:10
  Speaker 1: spin down. It knows, somehow, across the vast, freezing void
• 25:17
  Speaker 1: of four light years, the information traveled instantly. It is
• 25:23
  Speaker 1: as if They are not two separate particles at all,
• 25:27
  Speaker 1: but the same object stretched across space. Einstein hated this.
• 25:35
  Speaker 1: He argued that there must be hidden variables, secret instructions
• 25:40
  Speaker 1: inside the particles that we just couldn't see. He compared
• 25:44
  Speaker 1: it to a pair of gloves. If you put one
• 25:47
  Speaker 1: glove in a box and mail it to Antarctica and
• 25:50
  Speaker 1: you keep the other one, your box and see a
• 25:54
  Speaker 1: left glove, you instantly know the one in Antarctica is
• 25:58
  Speaker 1: a right glove. No magic there, just logic. But quantum
• 26:04
  Speaker 1: mechanics is not about gloves. It was proven later, through
• 26:08
  Speaker 1: a theorem by a physicist named John Bell, that the
• 26:12
  Speaker 1: particles do not have hidden instructions. They really are deciding
• 26:18
  Speaker 1: in a moment. They are genuinely flipping a coin, And somehow,
• 26:23
  Speaker 1: the coins always land on opposite sides, no matter how
• 26:28
  Speaker 1: far apart they are. Visualize those two electrons, tiny, shimmering
• 26:34
  Speaker 1: specks of charge. One is here, in the cool air
• 26:39
  Speaker 1: of your room. The other is drifting in the silence
• 26:43
  Speaker 1: of deep space. A dark, velvet void separates them. But
• 26:49
  Speaker 1: there is an invisible thread A connection that ignores distance,
• 26:54
  Speaker 1: ignores time, ignores the speed of light. They are dancing
• 27:00
  Speaker 1: together in the dark. It suggests that separation is an illusion.
• 27:07
  Speaker 1: We look at the universe and see separate objects. A
• 27:11
  Speaker 1: star here, a planet there, a person here, a person there.
• 27:17
  Speaker 1: We see gaps. We see empty space. But in the
• 27:22
  Speaker 1: eyes of the math, once two things have met, once
• 27:26
  Speaker 1: they have interacted, they are never truly apart. Their wave
• 27:31
  Speaker 1: functions are mingled. Think about the atoms in your body.
• 27:37
  Speaker 1: They were forged in the hearts of dying stars billions
• 27:41
  Speaker 1: of years ago. They have bounced against billions of other
• 27:45
  Speaker 1: atoms in nebulae, in asteroids, in the atmosphere of early Earth.
• 27:51
  Speaker 1: How many of your atoms are entangled with things you
• 27:55
  Speaker 1: will never see? Maybe a carbon atom in your left
• 27:58
  Speaker 1: hand is entangled with a hydrogen atom drifting in the
• 28:02
  Speaker 1: atmosphere of Jupiter. Maybe the iron in your blood is
• 28:06
  Speaker 1: dancing in sync with a particle buried in the ice
• 28:10
  Speaker 1: of a comet. You are not an island. You are
• 28:15
  Speaker 1: a web, a sprawling, invisible web of connections that stretches
• 28:21
  Speaker 1: out into the cosmos, tying you to the fabric of
• 28:25
  Speaker 1: reality in ways you cannot feel, but are nonetheless true.
• 28:31
  Speaker 1: This invisible connection is a bridge, and sometimes particles decide
• 28:36
  Speaker 1: to cross bridges that aren't even there. We have talked
• 28:40
  Speaker 1: about particles being in two places, and particles talking faster
• 28:45
  Speaker 1: than light. Now, Let us talk about particles walking through walls.
• 28:50
  Speaker 1: This is called quantum tunneling. In the classical world, the
• 28:57
  Speaker 1: world of oat milk lattes and fire codes, if you
• 29:01
  Speaker 1: run at a concrete wall, you will stop. You will
• 29:06
  Speaker 1: hit the wall, you will bruise, and you will likely
• 29:09
  Speaker 1: fall over. This is because the electrons in your body
• 29:14
  Speaker 1: repel the electrons in the wall. It is an electromagnetic
• 29:19
  Speaker 1: force field that feels like solid matter. But if you
• 29:23
  Speaker 1: were an electron, the wall would look different. It would
• 29:28
  Speaker 1: not look like a solid barrier. It would look like
• 29:32
  Speaker 1: a hill. An energy hill. Now, if you roll a
• 29:37
  Speaker 1: ball up a hill and you don't give it enough energy,
• 29:40
  Speaker 1: it won't make it to the top. It will roll
• 29:44
  Speaker 1: back down. That is classical physics. You need enough energy
• 29:50
  Speaker 1: to overcome the barrier. But in the quantum world, the
• 29:54
  Speaker 1: particle is a wave. And waves are fuzzy. they don't
• 30:00
  Speaker 1: have a hard location. A wave extends out. It has
• 30:05
  Speaker 1: a tail that trails off into the distance. So, when
• 30:11
  Speaker 1: an electron approaches an energy barrier, a wall, most of
• 30:16
  Speaker 1: its wave bounces off. But a tiny, tiny piece of
• 30:21
  Speaker 1: that wave, the tail, might extend through the barrier to
• 30:26
  Speaker 1: the other side. Because the particle's location is based on probability,
• 30:30
  Speaker 1: there is a small, non-zero chance that the particle will
• 30:35
  Speaker 1: simply appear on the other side. It does not climb
• 30:41
  Speaker 1: over the wall. It does not bore a hole through
• 30:44
  Speaker 1: the wall. It simply ceases to exist on one side
• 30:49
  Speaker 1: and instantly exists on the other. It tunnels through the impossible.
• 30:54
  Speaker 1: This sounds like science fiction, like a cheat code in
• 30:58
  Speaker 1: a video game, but it is happening inside you right now.
• 31:03
  Speaker 1: Your DNA, the double helix script that writes your biology,
• 31:08
  Speaker 1: is held together by hydrogen bonds, protons. Sometimes, very rarely,
• 31:15
  Speaker 1: a proton in your DNA will quantum tunnel across to
• 31:20
  Speaker 1: a place it shouldn't be. It slips through the barrier.
• 31:24
  Speaker 1: When your DNA replicates, this misplaced proton can cause a mutation.
• 31:31
  Speaker 1: A typo in the code. Most of the time, this
• 31:36
  Speaker 1: does nothing. Sometimes, it causes problems. But sometimes, over billions
• 31:43
  Speaker 1: of years, these tiny quantum jumps, these ghosts walking through walls,
• 31:49
  Speaker 1: are the reason evolution happens. You are here, lying in bed,
• 31:55
  Speaker 1: capable of understanding these words, partly because billions of years ago,
• 32:01
  Speaker 1: subatomic particles decided to ignore the no trespassing signs of
• 32:05
  Speaker 1: physics and walk through a wall. It is a survival
• 32:09
  Speaker 1: strategy written in the language of chance. Imagine trying to
• 32:14
  Speaker 1: walk through a closed door yourself. You stand there, pressing
• 32:19
  Speaker 1: your hand against the wood. In the quantum view, There
• 32:22
  Speaker 1: is a probability, infinitesimal but real, that all the particles
• 32:28
  Speaker 1: in your body could simultaneously tunnel through the door. If
• 32:32
  Speaker 1: you waited long enough, longer than the age of the universe,
• 32:36
  Speaker 1: longer than the lifespan of the stars, eventually, statistically, you
• 32:42
  Speaker 1: would fall right through the wood and land in the hallway. So,
• 32:46
  Speaker 1: walls are not absolutes. They are just probability spikes. They
• 32:51
  Speaker 1: are suggestions that usually hold up, but not always. The
• 32:56
  Speaker 1: universe is porous. It is leaky. Nothing is truly sealed tight.
• 33:03
  Speaker 1: The lead box we put the cat in, even that
• 33:06
  Speaker 1: isn't perfect. Given enough time, the atoms of the box
• 33:10
  Speaker 1: could tunnel out. The atoms of the cat could tunnel out.
• 33:14
  Speaker 1: Everything is slowly leaking into everything else. The sardonic truth
• 33:20
  Speaker 1: is that in the quantum world, no entry signs are
• 33:24
  Speaker 1: merely suggestions for those who are small enough and patient enough.
• 33:30
  Speaker 1: It seems the universe is shy, and it only behaves
• 33:34
  Speaker 1: properly when it knows it's being watched by a curious eye.
• 33:39
  Speaker 1: We return to the idea of the observer. We touched
• 33:43
  Speaker 1: on it with the double slit experiment, but let's go
• 33:47
  Speaker 1: deeper into the philosophical horror of it, the Heisenberg Uncertainty Principle.
• 33:54
  Speaker 1: Werner Heisenberg was a German physicist who realized that nature
• 33:59
  Speaker 1: has a limit on precision. He discovered that there are
• 34:02
  Speaker 1: pairs of properties that you cannot know simultaneously. The most
• 34:07
  Speaker 1: famous pair is position and momentum. Position is where you are.
• 34:15
  Speaker 1: Momentum is how fast you are going and in what direction.
• 34:19
  Speaker 1: In our world, you can know both. Your GPS can
• 34:23
  Speaker 1: tell you that you are on the highway, position, and
• 34:27
  Speaker 1: that you are going 65 miles per hour. Momentum. Simple.
• 34:34
  Speaker 1: But for a particle, you have to choose. If you
• 34:37
  Speaker 1: measure the position of an electron with extreme precision, if
• 34:41
  Speaker 1: you pin it down to a tiny exact point, you
• 34:45
  Speaker 1: lose all information about its momentum. It becomes a blur
• 34:49
  Speaker 1: of motion. You know where it is, but you have
• 34:53
  Speaker 1: no idea where it is going or how fast. Conversely,
• 34:58
  Speaker 1: if you measure its momentum, you clock its speed perfectly,
• 35:03
  Speaker 1: you lose all information about its position. It becomes a
• 35:07
  Speaker 1: smear of location. You know how fast it is going,
• 35:11
  Speaker 1: but you have absolutely no idea where it is. It
• 35:16
  Speaker 1: is not that our instruments are bad. It is not
• 35:20
  Speaker 1: that we need better microscopes. It is a fundamental property
• 35:25
  Speaker 1: of the universe. The information simply does not exist. Imagine
• 35:31
  Speaker 1: trying to take a photograph of a fast-moving ceiling fan
• 35:35
  Speaker 1: in a dark room. You use a camera with a
• 35:39
  Speaker 1: slow shutter speed. The photo shows a blurry circle of motion.
• 35:43
  Speaker 1: You can see the speed, momentum, but you cannot see
• 35:48
  Speaker 1: the individual blades. Position. Now, use a high-speed flash. Snap.
• 35:56
  Speaker 1: You freeze the blades in place. You can see exactly
• 36:00
  Speaker 1: where they are. Position. But in that frozen image, you
• 36:05
  Speaker 1: have lost the sense of their motion. Momentum. Nature refuses
• 36:10
  Speaker 1: to be precise. It leaves us with a universe that
• 36:14
  Speaker 1: is fundamentally out of focus at its core. We want
• 36:19
  Speaker 1: crisp lines. We want clear answers. But the deeper we look,
• 36:25
  Speaker 1: the more we realize that the foundation of reality is
• 36:29
  Speaker 1: not a sharp architectural drawing. It is an impressionist painting.
• 36:35
  Speaker 1: It is dots and blurs. that only look like a
• 36:39
  Speaker 1: picture when you stand far away. This blurriness is the
• 36:43
  Speaker 1: fuzz of existence, and perhaps there is peace to be
• 36:49
  Speaker 1: found in that. You are lying in bed, running through
• 36:54
  Speaker 1: the checklist of your day. Did I lock the door?
• 36:58
  Speaker 1: Did I turn off the oven? Did I say the
• 37:01
  Speaker 1: wrong thing to that person? You are trying to measure
• 37:04
  Speaker 1: the position and momentum of your life with absolute precision.
• 37:09
  Speaker 1: You want to know exactly where you stand, but the
• 37:12
  Speaker 1: universe tells us that you can't know. The more you
• 37:16
  Speaker 1: try to pin down exactly where you are, the less
• 37:20
  Speaker 1: you know about where you are going. The more you
• 37:22
  Speaker 1: focus on the trajectory, the less grounded you are in
• 37:26
  Speaker 1: the moment. It is a physical law that uncertainty is
• 37:30
  Speaker 1: baked into the cake. You are allowed to be blurry.
• 37:34
  Speaker 1: you are allowed to be unfocused. The atoms that make
• 37:38
  Speaker 1: you up certainly are. Beneath that blurriness, the vacuum of
• 37:43
  Speaker 1: space is not actually empty. It is a boiling sea
• 37:48
  Speaker 1: of things that don't yet exist. We tend to think
• 37:52
  Speaker 1: of a vacuum as nothingness. If we take a box
• 37:55
  Speaker 1: and pump all the air out, pump all the dust out,
• 37:59
  Speaker 1: shield it from radiation, and cool it to absolute zero,
• 38:03
  Speaker 1: we think it is empty. But quantum mechanics laughs at
• 38:06
  Speaker 1: the idea of empty. There is something called the quantum
• 38:11
  Speaker 1: vacuum or quantum foam. Even in perfect emptiness, the uncertainty
• 38:18
  Speaker 1: principle says that energy cannot be exactly zero. Zero is
• 38:25
  Speaker 1: too precise. Nature hates precise. So the energy level fluctuates.
• 38:34
  Speaker 1: It jitters. Out of this jitter, particles pop into existence.
• 38:40
  Speaker 1: A particle and its antiparticle, matter and antimatter, suddenly appear
• 38:47
  Speaker 1: out of nowhere. They borrow energy from the vacuum, exist
• 38:52
  Speaker 1: for a fraction of a nanosecond, and then collide and
• 38:55
  Speaker 1: annihilate each other, returning the energy to the vacuum. They
• 39:00
  Speaker 1: are called virtual particles. but they are real enough to
• 39:06
  Speaker 1: have effects. Imagine the empty space in your room right now,
• 39:11
  Speaker 1: the space between your bed and the dresser. It looks empty,
• 39:16
  Speaker 1: but it is actually a frothing, bubbling soup of creation
• 39:20
  Speaker 1: and destruction. Particles are blinking in and out of existence
• 39:26
  Speaker 1: like sparks from a dying campfire. Pop. Pop. Flash. Gone.
• 39:33
  Speaker 1: Trillions of times a second. Everywhere. The vacuum is alive.
• 39:41
  Speaker 1: It is heavy. It has pressure. If you were small
• 39:45
  Speaker 1: enough to see it, the emptiness would look like a
• 39:47
  Speaker 1: boiling pot of water. A chaotic storm of energy. There
• 39:52
  Speaker 1: is a smell to this, if you could smell it.
• 39:57
  Speaker 1: A metallic ozone scent. The smell of lightning. The smell
• 40:04
  Speaker 1: of raw electricity. It is the smell of the universe
• 40:08
  Speaker 1: working overtime, just to look like it is doing nothing.
• 40:12
  Speaker 1: It is exhausting to think about. The universe never sleeps.
• 40:17
  Speaker 1: Even when there is nothing there, it is busy making
• 40:20
  Speaker 1: sure that the nothing is fully populated with temporary somethings.
• 40:25
  Speaker 1: But you, the macroscopic giant, you do not need to
• 40:29
  Speaker 1: worry about the quantum foam. You float above it. You
• 40:35
  Speaker 1: are a massive cruise ship sailing on top of this choppy,
• 40:39
  Speaker 1: microscopic ocean. You do not feel the waves. You just
• 40:45
  Speaker 1: feel the gentle sway of gravity. As the foam settles
• 40:50
  Speaker 1: and the energy dips, we find ourselves back in the quiet,
• 40:54
  Speaker 1: dark room of our own reality. We have toured the basement.
• 41:00
  Speaker 1: We have seen the indecisive light, the zombie cat, the
• 41:04
  Speaker 1: spooky telepathic electrons, and the ghosts walking through walls. It
• 41:09
  Speaker 1: is a weird place. It makes no sense to our
• 41:13
  Speaker 1: primate brains. which evolved to hunt on savannas and build
• 41:18
  Speaker 1: shelters out of mud. We evolved to understand rocks and sticks,
• 41:23
  Speaker 1: not wave functions and probability clouds. But there is a
• 41:28
  Speaker 1: legacy of grit here. Think about what keeps you solid.
• 41:33
  Speaker 1: You are made of atoms, electrons orbiting a nucleus. But
• 41:39
  Speaker 1: the electron is negatively charged and the nucleus is positively charged.
• 41:45
  Speaker 1: They should attract. The electron should spiral crash into the nucleus.
• 41:51
  Speaker 1: The atom should collapse. You should collapse into a tiny
• 41:55
  Speaker 1: speck of dense matter. Why don't you? Because of these
• 42:00
  Speaker 1: quantum rules, the uncertainty principle forbids the electron from getting
• 42:06
  Speaker 1: too close to the nucleus. Because if it did, we
• 42:10
  Speaker 1: would know its position too well. So it keeps its distance.
• 42:15
  Speaker 1: It hums in a cloud around the center. It is
• 42:19
  Speaker 1: this quantum refusal to be pinned down that gives atoms
• 42:25
  Speaker 1: their size. It is what makes solid matter take up space.
• 42:30
  Speaker 1: It is what keeps the floor solid beneath your bed.
• 42:33
  Speaker 1: It is what keeps the air in your lungs. You
• 42:36
  Speaker 1: are held together by the stubborn refusal of subatomic particles
• 42:41
  Speaker 1: to follow the rules of classical logic. You are a
• 42:45
  Speaker 1: walking paradox, a structure built on uncertainty, a solid object
• 42:52
  Speaker 1: made of ghosts. And tonight, that is enough. You do
• 42:57
  Speaker 1: not need to solve the equations. You do not need
• 43:01
  Speaker 1: to collapse the wave function. You can just be. You
• 43:05
  Speaker 1: can let your own thoughts become like the quantum foam,
• 43:09
  Speaker 1: bubbling up and vanishing popping in and out of existence
• 43:14
  Speaker 1: without consequence. Let them be virtual thoughts. Don't grab them.
• 43:20
  Speaker 1: Don't measure them. Just let them annihilate back into the vacuum.
• 43:26
  Speaker 1: The cooling fan is still humming. The coffee is cold.
• 43:31
  Speaker 1: The neon sign in the distance is flickering. You are here,
• 43:37
  Speaker 1: and you are there. You are awake. and you are drifting.
• 43:42
  Speaker 1: Close your eyes now. The particles will continue their strange
• 43:46
  Speaker 1: dance without your supervision. And for tonight, that is enough.
• 43:53
  Speaker 1: But perhaps that is a lie we tell ourselves to
• 43:57
  Speaker 1: find comfort in the dark. Because deep down, in the
• 44:02
  Speaker 1: folds of the gray matter that refuses to shut off,
• 44:06
  Speaker 1: you know that the dance stops. never really stops, and
• 44:10
  Speaker 1: the implications of that dance are far stranger than just
• 44:14
  Speaker 1: a ghost cat or a spooky electron. We have looked
• 44:18
  Speaker 1: at the particles as if they are tiny actors on
• 44:20
  Speaker 1: a stage, waiting for us to applaud so they can
• 44:24
  Speaker 1: choose a role. But there is another theory, a theory
• 44:30
  Speaker 1: that suggests the actors never choose. They play every role
• 44:37
  Speaker 1: in every play all at once, forever. So, sit up
• 44:43
  Speaker 1: for a moment. Adjust the pillow. The night is still young,
• 44:48
  Speaker 1: and we have to open the heaviest door in our
• 44:51
  Speaker 1: midnight laboratory. We are leaving the cold steel room of
• 44:55
  Speaker 1: the cat and the lead box. We are walking down
• 44:59
  Speaker 1: a long, dimly lit hallway where the floorboards creak with
• 45:04
  Speaker 1: the weight of infinite possibilities. We are entering the library
• 45:09
  Speaker 1: of many worlds. In 1957, a doctoral candidate at Princeton
• 45:15
  Speaker 1: named Hugh Everett III had a thought that was too
• 45:19
  Speaker 1: heavy for the physics community to hold. He looked at
• 45:22
  Speaker 1: the math of the quantum world, the math that says
• 45:26
  Speaker 1: a particle is in two places at once, and he
• 45:29
  Speaker 1: asked a simple, terrifying question. What if the wave function
• 45:37
  Speaker 1: never collapses? What if the universe never chooses? When we
• 45:42
  Speaker 1: opened the box to check on the cat, we assumed
• 45:45
  Speaker 1: that reality snapped into one single outcome. The cat is
• 45:50
  Speaker 1: alive or the cat is dead. But Everett suggested that
• 45:56
  Speaker 1: the universe is not a singular thing. He proposed that
• 46:01
  Speaker 1: at the moment of measurement, the universe splits. Picture a tree,
• 46:08
  Speaker 1: a massive ancient oak tree growing in the dark. The
• 46:12
  Speaker 1: trunk is the timeline of the past. It is solid.
• 46:17
  Speaker 1: It is wood and bark and memory. But as you
• 46:21
  Speaker 1: move up the trunk to the present moment, the wood
• 46:24
  Speaker 1: splits into branches. Every time a subatomic particle interacts with another,
• 46:29
  Speaker 1: which happens trillions of times a nanosecond inside your own body,
• 46:35
  Speaker 1: the branch splits. In one branch, the radioactive atom decayed,
• 46:41
  Speaker 1: the hammer dropped, and the cat is dead. In another branch,
• 46:46
  Speaker 1: the atom did not decay, the hammer stayed put, and
• 46:50
  Speaker 1: the cat is alive. Both branches are equally real. Both
• 46:56
  Speaker 1: versions of the cat are real. And, most disorientingly, both
• 47:02
  Speaker 1: versions of you are real. This is the many worlds interpretation.
• 47:10
  Speaker 1: It suggests that reality is constantly fracturing, like a pane
• 47:15
  Speaker 1: of glass that never stops shattering. It is a concept
• 47:19
  Speaker 1: that strips away the specialness of your current experience. You
• 47:23
  Speaker 1: think you are the only you lying in that bed
• 47:27
  Speaker 1: listening to this voice. But in the branch next door,
• 47:31
  Speaker 1: separated by a membrane of probability thinner than a thought,
• 47:35
  Speaker 1: there is a version of you who turned this video
• 47:39
  Speaker 1: off five minutes ago. There is a version of you
• 47:44
  Speaker 1: who decided to get a glass of water. There is
• 47:47
  Speaker 1: a version of you who never bought the bed you
• 47:50
  Speaker 1: were lying in. Let us Visualize this as a library.
• 47:57
  Speaker 1: Imagine a space that is infinite. The ceilings are lost
• 48:02
  Speaker 1: in shadow. The shelves stretch out in every direction. Miles
• 48:07
  Speaker 1: upon miles of dark mahogany rose, smelling of dust and
• 48:12
  Speaker 1: old paper and binding glue. Every book on every shelf
• 48:17
  Speaker 1: is a biography of the universe. You are walking down
• 48:21
  Speaker 1: an aisle, This aisle is your current timeline. It is
• 48:25
  Speaker 1: the story where you are tired, your eyes are heavy,
• 48:29
  Speaker 1: and you are trying to understand quantum mechanics. But if
• 48:33
  Speaker 1: you look through the gaps in the shelves, you can
• 48:36
  Speaker 1: see other aisles. In the aisle to your left, you
• 48:40
  Speaker 1: are asleep. In the aisle to your right, you are
• 48:44
  Speaker 1: wide awake, staring at the ceiling, worrying about a conversation
• 48:48
  Speaker 1: from three years ago. The horror of the many-worlds theory
• 48:54
  Speaker 1: is not that you are alone. It is that you
• 48:58
  Speaker 1: are never, ever alone. You are accompanied by an infinite
• 49:03
  Speaker 1: army of almost-yous. Think about the implications for a moment.
• 49:09
  Speaker 1: It creates a sort of vertigo, a nausea of the soul,
• 49:14
  Speaker 1: every mistake you almost made you actually made in another world.
• 49:19
  Speaker 1: Every car accident you narrowly avoided, you didn't avoid in
• 49:23
  Speaker 1: another branch. The universe is a hoarder's episode of realities.
• 49:29
  Speaker 1: It throws nothing away. Every possibility, no matter how tragic
• 49:35
  Speaker 1: or mundane, is kept and stored on a shelf in
• 49:39
  Speaker 1: this infinite library. There is a strange, sardonic weight to this.
• 49:46
  Speaker 1: We spend so much energy regretting our choices. If only
• 49:50
  Speaker 1: I had taken that job. If only I hadn't said that.
• 49:55
  Speaker 1: The sleepless scientist is here to tell you. You did.
• 49:59
  Speaker 1: You took the job. You kept your mouth shut. You
• 50:03
  Speaker 1: moved to the city. You stayed in the town. Somewhere,
• 50:07
  Speaker 1: In the vast branching fractal of the multiverse, those lives
• 50:12
  Speaker 1: are playing out with the same visceral realism as this one.
• 50:17
  Speaker 1: The coffee is just as cold there. The fan is
• 50:23
  Speaker 1: just as loud. Does this make your choices meaningless? Not quite.
• 50:30
  Speaker 1: It just makes them specific. You are carving a path
• 50:34
  Speaker 1: through the library, You are choosing which aisle to walk down.
• 50:39
  Speaker 1: The other aisles exist, but you don't have to read
• 50:42
  Speaker 1: those books. You only have to read this one. And
• 50:47
  Speaker 1: right now, the text on the page says, you are safe.
• 50:52
  Speaker 1: You are warm. You are static. But let us shake
• 50:57
  Speaker 1: the dust off that idea and look at something even stranger.
• 51:02
  Speaker 1: If the universe is splitting constantly, What holds it together?
• 51:07
  Speaker 1: What keeps the aisles from crashing into each other? It
• 51:11
  Speaker 1: is a phenomenon called decoherence. It is the reason we
• 51:17
  Speaker 1: don't see the other worlds. The vibrations of the different
• 51:21
  Speaker 1: branches get out of sync. It is like two radio
• 51:26
  Speaker 1: stations playing on frequencies that are drifting apart. For a
• 51:30
  Speaker 1: brief moment, you can hear the static of the other song,
• 51:34
  Speaker 1: but Eventually, the signal clears and you are locked into
• 51:39
  Speaker 1: your own broadcast. However, sometimes the signal doesn't clear. Sometimes,
• 51:47
  Speaker 1: the universe lets us manipulate time itself. We have talked
• 51:51
  Speaker 1: about particles moving through space. Now, we must talk about
• 51:57
  Speaker 1: particles moving through time, or rather, the illusion that time
• 52:02
  Speaker 1: flows in one direction. In our macroscopic world of alarm
• 52:06
  Speaker 1: clocks and deadlines, time is an arrow. It flies from
• 52:11
  Speaker 1: the past to the future. You break an egg and
• 52:16
  Speaker 1: it scrambles. You cannot unscramble it. This is entropy. It
• 52:22
  Speaker 1: is the law of the land. But down in the
• 52:25
  Speaker 1: quantum basement, the arrow of time is not so straight.
• 52:30
  Speaker 1: In fact, It might be double-headed. Let me introduce you
• 52:35
  Speaker 1: to the delayed choice quantum eraser. It sounds like a
• 52:38
  Speaker 1: bad science fiction weapon, or perhaps a tool for removing
• 52:42
  Speaker 1: ink from a page, but it is actually an experiment
• 52:46
  Speaker 1: that suggests the future can change the past. We go
• 52:50
  Speaker 1: back to the double-slit experiment. Remember the photon gun? Remember
• 52:58
  Speaker 1: the mystery? If we don't watch, It behaves like a wave.
• 53:05
  Speaker 1: If we do watch, it behaves like a particle. Physicists
• 53:10
  Speaker 1: decided to get clever. They set up a complicated maze
• 53:14
  Speaker 1: of crystals and mirrors. They fired a photon through the
• 53:19
  Speaker 1: double slits. But this time, they split the photon into
• 53:24
  Speaker 1: two entangled twins. One twin goes to a detector screen
• 53:29
  Speaker 1: to make the patterns. The other twin goes off on
• 53:33
  Speaker 1: a longer journey through a series of detectors that act
• 53:38
  Speaker 1: as watchers. Here is the kicker. The experiment is set
• 53:44
  Speaker 1: up so that the decision to watch or not watch
• 53:48
  Speaker 1: the second twin happens after the first twin has already
• 53:52
  Speaker 1: hit the screen. Read that again in your mind. The
• 53:56
  Speaker 1: first particle hits the wall. It has made its mark.
• 54:01
  Speaker 1: It is done. It is history. Then, nanoseconds later, we
• 54:07
  Speaker 1: decide whether or not to check which path its twin took.
• 54:11
  Speaker 1: Common sense screams that what happens second cannot affect what
• 54:16
  Speaker 1: happened first. You cannot burn the toast after you have
• 54:20
  Speaker 1: already eaten it, but the data disagrees. If we choose
• 54:25
  Speaker 1: to destroy the information about the path, if we choose
• 54:28
  Speaker 1: not to look at the twin, The first particle, the
• 54:32
  Speaker 1: one that already hit the screen in the past, shows
• 54:35
  Speaker 1: an interference pattern. It acted like a wave. If we
• 54:40
  Speaker 1: choose to look at the twin, the first particle shows
• 54:43
  Speaker 1: a clump pattern. It acted like a particle. The choice
• 54:48
  Speaker 1: made in the future determined the history of the particle
• 54:51
  Speaker 1: in the past. It is as if the particle arrived
• 54:54
  Speaker 1: at the screen, waited, looked at its watch, and said, okay?
• 55:00
  Speaker 1: Are they going to look at my brother in five nanoseconds?
• 55:03
  Speaker 1: If yes, I'll be a rock. If no, I'll be
• 55:08
  Speaker 1: a ripple. This suggests that history is not a fixed recording.
• 55:14
  Speaker 1: It is a fluid dynamic. The events of the past
• 55:18
  Speaker 1: are entangled with the choices of the future. Lie there
• 55:23
  Speaker 1: and let that sink into your bones. The past is
• 55:26
  Speaker 1: usually a heavy thing. We carry it. like a backpack
• 55:31
  Speaker 1: full of bricks. We think it is written in stone,
• 55:36
  Speaker 1: but in the quantum realm, the past is just as
• 55:40
  Speaker 1: fuzzy as the future. It is a cloud of what
• 55:44
  Speaker 1: might have happened that only sharpens when the future requires
• 55:49
  Speaker 1: it to. It gives a whole new layer of meaning
• 55:52
  Speaker 1: to the phrase, hindsight is 20-20. In quantum mechanics, Hindsight
• 55:59
  Speaker 1: actually constructs the view. Now, take a breath. The air
• 56:04
  Speaker 1: in your room is cool. The shadows are long. You
• 56:09
  Speaker 1: are not a photon. You are a biological machine made
• 56:14
  Speaker 1: of trillions of cells, and you generally experience time in
• 56:19
  Speaker 1: a straight line. You remember breakfast? You do not remember
• 56:23
  Speaker 1: tomorrow's dinner. That is a limitation of your neurology. not
• 56:28
  Speaker 1: necessarily a limitation of the universe. But let us pivot
• 56:32
  Speaker 1: to something that feels a little less like a headache
• 56:36
  Speaker 1: and a little more like a superpower or a curse,
• 56:41
  Speaker 1: depending on how much you value your privacy. The quantum
• 56:46
  Speaker 1: Zeno effect. Zeno was an ancient Greek philosopher who loved paradoxes.
• 56:53
  Speaker 1: He said that if you shoot an arrow at a target,
• 56:56
  Speaker 1: before it gets there, it has to go halfway, and
• 57:00
  Speaker 1: before it goes halfway, it has to go a quarter
• 57:03
  Speaker 1: of the way, and before that, an eighth. He argued
• 57:08
  Speaker 1: that motion is impossible because you have to complete an
• 57:12
  Speaker 1: infinite number of tasks to move an inch. Obviously, arrows
• 57:17
  Speaker 1: do hit targets. Zeno was wrong about the macro world,
• 57:23
  Speaker 1: but he was accidentally right about the quantum world. The
• 57:28
  Speaker 1: quantum Zeno effect states that a system cannot change while
• 57:33
  Speaker 1: you are watching it. Let's go back to our radioactive
• 57:36
  Speaker 1: atom in the box with the cat. That atom is unstable.
• 57:41
  Speaker 1: It wants to decay. It wants to spit out a
• 57:46
  Speaker 1: particle and change into a different element. It is like
• 57:49
  Speaker 1: a person holding a heavy box who desperately wants to
• 57:53
  Speaker 1: drop it. But if we stare at the atom, If
• 57:57
  Speaker 1: we measure it constantly, checking it a million times a second,
• 58:02
  Speaker 1: it will never decay. The act of observation freezes the
• 58:06
  Speaker 1: system in its current state by asking, are you decayed yet?
• 58:12
  Speaker 1: Over and over again, we force the wave function to
• 58:16
  Speaker 1: collapse back to the undeformed state. We reset the clock.
• 58:22
  Speaker 1: A watched pot never boils. is an old proverb about patience.
• 58:27
  Speaker 1: In physics, it is a literal instruction for freezing time.
• 58:32
  Speaker 1: If you could look at something fast enough, if you
• 58:35
  Speaker 1: could observe it continuously without blinking, without a single gap
• 58:40
  Speaker 1: in your attention, you could prevent it from ever changing.
• 58:45
  Speaker 1: You could stop a bird in mid-flight not by grabbing it,
• 58:49
  Speaker 1: but by looking at it so intensely its atoms are
• 58:53
  Speaker 1: not allowed to move to the next state. Of course,
• 58:58
  Speaker 1: you cannot do this. You blink. Your brain has a
• 59:03
  Speaker 1: refresh rate. You are a biological creature with lag. But
• 59:09
  Speaker 1: the universe does not blink. There are theories that suggest
• 59:14
  Speaker 1: the reason certain particles remain stable for billions of years
• 59:18
  Speaker 1: is that the universe is constantly observing them, locking them
• 59:22
  Speaker 1: in place with a relentless cosmic stare. It is a
• 59:26
  Speaker 1: claustrophobic thought to be held in place by the gaze
• 59:30
  Speaker 1: of the vacuum, but it is also a form of preservation.
• 59:35
  Speaker 1: The stability of your body, the fact that your atoms
• 59:38
  Speaker 1: don't just drift apart or decay into radiation, is partly
• 59:43
  Speaker 1: due to the constant interactions, the constant measurements between the
• 59:49
  Speaker 1: particles themselves. Your atoms are watching each other. They are
• 59:54
  Speaker 1: keeping each other honest. They are holding hands in the
• 59:58
  Speaker 1: dark and saying, Stay here. Be iron. Be carbon. Don't
• 1:00:05
  Speaker 1: fade away. It is a microscopic solidarity. A pact of existence.
• 1:00:12
  Speaker 1: And speaking of existence, we have to talk about the
• 1:00:15
  Speaker 1: fabric of space itself. We mentioned the vacuum foam. The
• 1:00:21
  Speaker 1: boiling soup of nothingness. But what if we zoom in
• 1:00:26
  Speaker 1: even further? What if we try to find the pixel
• 1:00:30
  Speaker 1: size of the universe? This brings us to the plank length.
• 1:00:35
  Speaker 1: In our digital world, we are used to pixels. If
• 1:00:39
  Speaker 1: you look at your phone screen with a magnifying glass,
• 1:00:43
  Speaker 1: you see the tiny red, green, and blue squares. The
• 1:00:48
  Speaker 1: image is not smooth. It is made of blocks. Scientists
• 1:00:53
  Speaker 1: have asked, is the universe smooth? Is reality like a
• 1:00:58
  Speaker 1: continuous oil painting, or is it a digital image made
• 1:01:02
  Speaker 1: of tiny, discrete blocks? If you take a ruler and
• 1:01:07
  Speaker 1: divide it in half, then divide that half and keep going,
• 1:01:12
  Speaker 1: do you eventually hit a limit, a point where you
• 1:01:15
  Speaker 1: cannot divide space any further? The answer seems to be yes.
• 1:01:22
  Speaker 1: There is a length 1.6 times 10 to the power
• 1:01:26
  Speaker 1: of negative 35 meters. It is called the Planck length.
• 1:01:32
  Speaker 1: It is the resolution limit of the universe. It is
• 1:01:37
  Speaker 1: the pixel size of reality. Below this length, the concepts
• 1:01:42
  Speaker 1: of space and geometry break down. You cannot have a
• 1:01:47
  Speaker 1: distance shorter than this. It is like trying to draw
• 1:01:51
  Speaker 1: a line thinner than the tip of your pencil. The
• 1:01:55
  Speaker 1: physics just stops making sense. This suggests that the universe
• 1:02:00
  Speaker 1: is granular. It is not a smooth flow. It is
• 1:02:04
  Speaker 1: a grid, a three-dimensional grid of tiny, tiny volumes. And
• 1:02:12
  Speaker 1: if reality is a grid, if it has a pixel size,
• 1:02:16
  Speaker 1: that sounds suspiciously like a simulation. I am not saying
• 1:02:21
  Speaker 1: you are in a computer. That is a topic for
• 1:02:24
  Speaker 1: a different kind of anxiety. But the physics does mimic
• 1:02:29
  Speaker 1: the constraints of a processing system. There is a maximum speed,
• 1:02:34
  Speaker 1: the speed of light. There is a minimum size, the
• 1:02:38
  Speaker 1: plank length. There is a limit to how much information
• 1:02:42
  Speaker 1: can be packed into a region of space. This is
• 1:02:46
  Speaker 1: the Bekenstein bound. It says that a finite volume of
• 1:02:50
  Speaker 1: space can only hold a finite amount of information. You
• 1:02:54
  Speaker 1: cannot pack infinite data into a hard drive, and you
• 1:02:58
  Speaker 1: cannot pack infinite complexity into a region of the universe.
• 1:03:02
  Speaker 1: This leads to the holographic principle. Imagine a soda can.
• 1:03:09
  Speaker 1: The can is three-dimensional. It has volume. It holds liquid.
• 1:03:15
  Speaker 1: But all the information about the brand, the ingredients, and
• 1:03:20
  Speaker 1: the logo is printed on the two-dimensional surface of the label.
• 1:03:25
  Speaker 1: Some physicists believe the universe is like that can. They
• 1:03:30
  Speaker 1: propose that all the information that makes up our three-dimensional reality, you,
• 1:03:36
  Speaker 1: the bed, the room, the stars, is actually stored on
• 1:03:40
  Speaker 1: a two-dimensional surface at the edge of the universe. We
• 1:03:44
  Speaker 1: might be... Holograms, not the flickering blue ghosts from Star Wars,
• 1:03:50
  Speaker 1: but a projection, a three-dimensional rendering of two-dimensional data. If
• 1:03:57
  Speaker 1: this is true, then depth is an illusion. The feeling
• 1:04:02
  Speaker 1: of reaching out and touching the wall is a sensory trick.
• 1:04:06
  Speaker 1: In reality, you and the wall are just data points
• 1:04:10
  Speaker 1: smeared on a distant horizon, interacting on a flat surface
• 1:04:15
  Speaker 1: projecting the experience of space, it sounds insane. It feels insane.
• 1:04:23
  Speaker 1: You feel thick. You feel heavy. You feel the depth
• 1:04:27
  Speaker 1: of your lungs as you breathe. But remember, your feelings
• 1:04:33
  Speaker 1: are just electrical signals. Your brain is a dark, wet
• 1:04:38
  Speaker 1: cavern that has never seen the light of day. It
• 1:04:43
  Speaker 1: sits in your skull, receiving impulses from your nerves, and
• 1:04:47
  Speaker 1: constructs a story called the world. If the data coming
• 1:04:51
  Speaker 1: in says there is depth, the brain builds depth. It
• 1:04:56
  Speaker 1: does not care if the data comes from a 3D
• 1:04:59
  Speaker 1: universe or a 2D surface. It just renders the scene. So,
• 1:05:05
  Speaker 1: you are lying in a hologram, generated by a pixelated universe,
• 1:05:11
  Speaker 1: floating in a quantum soup. Observing yourself into existence. It
• 1:05:17
  Speaker 1: is a lot to take in on a Tuesday night,
• 1:05:20
  Speaker 1: but let's ground this again. Let's pull back from the
• 1:05:24
  Speaker 1: edge of the cosmic horizon and return to something tangible.
• 1:05:29
  Speaker 1: Something biological. Your nose. Take a breath. What do you smell?
• 1:05:37
  Speaker 1: Maybe the faint scent of laundry detergent on the pillowcase.
• 1:05:42
  Speaker 1: Maybe the stale coffee. Maybe the rain outside. Smell is
• 1:05:48
  Speaker 1: a chemical sense. We used to think it was a
• 1:05:51
  Speaker 1: simple lock and key mechanism. A scent molecule floats into
• 1:05:55
  Speaker 1: your nose, fits into a receptor shape like a key
• 1:05:59
  Speaker 1: in a lock, and triggers a signal. Shape matches shape. Simple. Classical.
• 1:06:07
  Speaker 1: But there was a problem. Some molecules had the exact
• 1:06:11
  Speaker 1: same shape but smell completely different. And some molecules have
• 1:06:15
  Speaker 1: completely different shapes, but smell exactly the same. The lock
• 1:06:21
  Speaker 1: and key theory had holes in it. Enter the vibration
• 1:06:26
  Speaker 1: theory of olfaction. This theory suggests that your nose is
• 1:06:32
  Speaker 1: not just feeling the shape of the molecule, it is
• 1:06:35
  Speaker 1: listening to it. The bonds between atoms in a molecule vibrate.
• 1:06:41
  Speaker 1: They hum at specific frequencies. The theory proposes that when
• 1:06:46
  Speaker 1: a scent molecule enters a receptor in your nose, an
• 1:06:50
  Speaker 1: electron in the receptor quantum tunnels across the molecule. It
• 1:06:56
  Speaker 1: uses the molecule as a bridge, but it can only
• 1:06:59
  Speaker 1: cross the bridge if the molecule is vibrating at the
• 1:07:03
  Speaker 1: right frequency. If the vibration matches, the electron tunnels, the
• 1:07:09
  Speaker 1: signal fires, and you smell rose, or burnt toast, or
• 1:07:14
  Speaker 1: wet dog. Your nose is a quantum spectroscope. You are
• 1:07:20
  Speaker 1: literally sniffing the vibrations of atoms. You are detecting the
• 1:07:25
  Speaker 1: quantum hum of matter with your face. It is a
• 1:07:28
  Speaker 1: reminder that these strange high-level physics concepts are not just
• 1:07:33
  Speaker 1: out there in the Large Hadron Collider or in black holes.
• 1:07:37
  Speaker 1: They are intimate. They are happening in your nostrils right now.
• 1:07:43
  Speaker 1: The smell of the room is a quantum event. This
• 1:07:46
  Speaker 1: biological reliance on the weirdness of physics brings us to
• 1:07:50
  Speaker 1: the concept of the quantum robin. No, not a superhero sidekick,
• 1:07:57
  Speaker 1: the bird, the European robin. These birds migrate thousands of
• 1:08:03
  Speaker 1: miles every year. They navigate with precision even on cloudy days.
• 1:08:10
  Speaker 1: We have known for a long time that they can
• 1:08:12
  Speaker 1: sense the Earth's magnetic field. They have an internal compass,
• 1:08:17
  Speaker 1: but biological material is wet and warm and messy. It
• 1:08:23
  Speaker 1: shouldn't be able to detect something as weak as the
• 1:08:26
  Speaker 1: Earth's magnetic field. A compass needle needs to be magnetic metal.
• 1:08:32
  Speaker 1: Birds are made of meat. The answer lies in their eyes.
• 1:08:39
  Speaker 1: Inside the robin's retina, there is a protein called cryptochrome.
• 1:08:45
  Speaker 1: When blue light hits this protein, it creates a pair
• 1:08:48
  Speaker 1: of entangled electrons. There they are again, entangled particles. The
• 1:08:55
  Speaker 1: spooky handshake. These electrons are highly sensitive to magnetic fields.
• 1:09:01
  Speaker 1: As the bird flies, the Earth's magnetic field tugs on
• 1:09:05
  Speaker 1: these entangled electrons, altering their chemical reaction rates. This allows
• 1:09:11
  Speaker 1: the bird to literally see the magnetic field. It likely
• 1:09:15
  Speaker 1: appears as a band of light or color superimposed over
• 1:09:19
  Speaker 1: their vision. They are flying through a heads-up display powered
• 1:09:23
  Speaker 1: by quantum entanglement. Nature figured out quantum mechanics millions of
• 1:09:28
  Speaker 1: years before we did. While we were banging rocks together,
• 1:09:32
  Speaker 1: birds were using spooky action at a distance to find
• 1:09:36
  Speaker 1: their way south for the winter. It is humbling. We
• 1:09:41
  Speaker 1: think we are the masters of the domain because we
• 1:09:43
  Speaker 1: built the microchip. But the trees, the birds, and even
• 1:09:48
  Speaker 1: the bacteria have been exploiting the loopholes of reality for eons. Photosynthesis,
• 1:09:55
  Speaker 1: the process that powers nearly all life on Earth, is
• 1:09:59
  Speaker 1: a quantum cheat. When a plant cell catches a photon
• 1:10:03
  Speaker 1: of sunlight, it needs to transport that energy to the
• 1:10:06
  Speaker 1: reaction center to turn it into food. It has to
• 1:10:10
  Speaker 1: navigate a maze of chlorophyll molecules If the energy moved
• 1:10:15
  Speaker 1: like a classical ball, bouncing randomly, it would lose too
• 1:10:19
  Speaker 1: much energy before it got to the destination. It would
• 1:10:22
  Speaker 1: be inefficient. Plants would starve. Instead, the energy moves like
• 1:10:31
  Speaker 1: a quantum wave. It takes all possible paths at once.
• 1:10:36
  Speaker 1: It explores every route simultaneously, finds the most efficient one,
• 1:10:41
  Speaker 1: and collapses into that path. It is perfect efficiency. The
• 1:10:46
  Speaker 1: grass outside your window is performing quantum computations every split second.
• 1:10:52
  Speaker 1: To feed itself, the salad you ate for lunch was
• 1:10:57
  Speaker 1: powered by the multiverse. It seems that life is not
• 1:11:01
  Speaker 1: separate from the quantum realm. Life is a surfer riding
• 1:11:07
  Speaker 1: the quantum wave. We exist in the warm, wet, chaotic
• 1:11:12
  Speaker 1: middle ground where the impossible becomes the biological. So, as
• 1:11:17
  Speaker 1: you lie there, feeling the heaviness of your limbs, realize
• 1:11:22
  Speaker 1: that you are a masterpiece of improbability. You are a
• 1:11:26
  Speaker 1: collection of atoms that should have fallen apart, held together
• 1:11:30
  Speaker 1: by uncertainty, powered by quantum tunneling, and navigating a universe
• 1:11:36
  Speaker 1: that might be a hologram. And yet, you are tired.
• 1:11:41
  Speaker 1: The complexity of the hardware does not change the simplicity
• 1:11:45
  Speaker 1: of the user experience. You just want to sleep. And
• 1:11:49
  Speaker 1: that is the ultimate paradox. The universe is infinitely complex,
• 1:11:55
  Speaker 1: terrifyingly strange, and fundamentally unknowable. But it is also boring
• 1:12:02
  Speaker 1: enough to let you nap. The fan hums. The refrigerator
• 1:12:08
  Speaker 1: compressor kicks on in the kitchen. a mundane rumble caused
• 1:12:12
  Speaker 1: by gas compression and electric motors. But inside the copper
• 1:12:17
  Speaker 1: wires of that motor, electrons are drifting. Inside the gas,
• 1:12:23
  Speaker 1: molecules are colliding. Let's drift further out now. We have
• 1:12:28
  Speaker 1: looked at the very small. We have looked at the
• 1:12:31
  Speaker 1: very weird. Now, let's look at the very final. The
• 1:12:38
  Speaker 1: Black Hole Information Paradox. This is the ultimate trash compactor
• 1:12:44
  Speaker 1: of the universe. A black hole is a region of
• 1:12:48
  Speaker 1: space where gravity is so strong that nothing, not even light,
• 1:12:54
  Speaker 1: can escape. It is a one-way door. For a long time,
• 1:13:00
  Speaker 1: we thought black holes were simple eaters. They ate matter,
• 1:13:05
  Speaker 1: they grew bigger, and that was it. Stephen Hawking changed that.
• 1:13:10
  Speaker 1: He realized that black holes are not completely black. They
• 1:13:16
  Speaker 1: glow faintly. They emit radiation, thermal radiation. This is now
• 1:13:23
  Speaker 1: called Hawking radiation. This means that black holes slowly lose
• 1:13:28
  Speaker 1: energy over unimaginable time scales, numbers so big that writing
• 1:13:34
  Speaker 1: them out would fill the rest of this script with zeros.
• 1:13:37
  Speaker 1: Black holes will evaporate. They will shrink and eventually disappear.
• 1:13:45
  Speaker 1: But here is the problem, the paradox that keeps physicists
• 1:13:49
  Speaker 1: reaching for the aspirin. Quantum mechanics has a strict rule.
• 1:13:53
  Speaker 1: Information is never destroyed. If you burn a book, the
• 1:13:58
  Speaker 1: information is not gone. It is scrambled into the ash
• 1:14:03
  Speaker 1: and the smoke and the heat. Theoretically, If you could
• 1:14:08
  Speaker 1: collect every particle of ash and every photon of heat,
• 1:14:13
  Speaker 1: you could reconstruct the book. The information is conserved. But
• 1:14:18
  Speaker 1: if a book falls into a black hole, and the
• 1:14:21
  Speaker 1: black hole eventually evaporates into random radiation, where did the
• 1:14:25
  Speaker 1: book go? The radiation coming out of the black hole
• 1:14:30
  Speaker 1: does not seem to carry the information of what fell in.
• 1:14:34
  Speaker 1: It is just random heat. So? If the black hole disappears,
• 1:14:39
  Speaker 1: the information of the book is gone forever, deleted from
• 1:14:43
  Speaker 1: the universe. This violates the laws of quantum mechanics. But
• 1:14:48
  Speaker 1: if the information is preserved, it violates our understanding of gravity.
• 1:14:53
  Speaker 1: This is the war between general relativity, the laws of
• 1:14:57
  Speaker 1: the big, and quantum mechanics, the laws of the small.
• 1:15:02
  Speaker 1: They do not get along. They are like Two roommates
• 1:15:08
  Speaker 1: who hate each other but have to share a studio apartment.
• 1:15:12
  Speaker 1: There are many proposed solutions to this paradox. Maybe the
• 1:15:17
  Speaker 1: information is stored on the surface of the black hole.
• 1:15:23
  Speaker 1: The hologram idea again. Maybe the information leaks out in
• 1:15:27
  Speaker 1: subtle ways we can't measure yet. Or maybe, and this
• 1:15:31
  Speaker 1: is the sleepless scientist favorite, the information goes somewhere else.
• 1:15:37
  Speaker 1: Maybe the black hole is not a dead end. Maybe
• 1:15:41
  Speaker 1: it is a bridge, a wormhole, an Einstein-Rosen bridge. What
• 1:15:47
  Speaker 1: falls into a black hole in this universe might spill
• 1:15:51
  Speaker 1: out into another universe, a white hole somewhere else, spewing
• 1:15:57
  Speaker 1: out the contents of our reality into a new space.
• 1:16:02
  Speaker 1: It is a beautiful image. The death of a star
• 1:16:06
  Speaker 1: here is the birth of a galaxy somewhere else, a
• 1:16:10
  Speaker 1: cosmic recycling system. It suggests that nothing is ever truly lost.
• 1:16:21
  Speaker 1: It just moves. It changes address. The memories you have forgotten,
• 1:16:27
  Speaker 1: the keys you lost in 2014, the dreams that faded
• 1:16:31
  Speaker 1: as soon as you woke up, maybe they aren't gone.
• 1:16:35
  Speaker 1: Maybe They just fell through the cracks of the floorboards
• 1:16:40
  Speaker 1: and landed in the basement of a different reality. It
• 1:16:44
  Speaker 1: is a comforting thought for the weary mind. You don't
• 1:16:50
  Speaker 1: have to hold on to everything. You don't have to
• 1:16:53
  Speaker 1: be the archivist of your own life. You can let
• 1:16:56
  Speaker 1: things go. You can let them fall into the event
• 1:17:00
  Speaker 1: horizon of sleep. The universe will catch them. It never
• 1:17:04
  Speaker 1: drops anything. The Midnight Lab is quiet now. We have
• 1:17:09
  Speaker 1: made a mess on the chalkboard. We have drawn diagrams
• 1:17:14
  Speaker 1: of splitting universes, tunneling electrons, and holographic horizons. The dust
• 1:17:22
  Speaker 1: of the chalk is floating in the air. Let's wipe
• 1:17:26
  Speaker 1: the board clean, not because the science is wrong, but
• 1:17:29
  Speaker 1: because the science is exhausting. The brain needs a break
• 1:17:34
  Speaker 1: from the infinite. It needs the finite. It needs the pillow.
• 1:17:41
  Speaker 1: Let's focus on the sensation of gravity again. Gravity is
• 1:17:45
  Speaker 1: the one force we haven't managed to fit into the
• 1:17:48
  Speaker 1: quantum puzzle. We have a theory for electromagnetism. We have
• 1:17:54
  Speaker 1: theories for the nuclear forces. But gravity remains stubborn. It
• 1:18:02
  Speaker 1: refuses to be quantized. It is smooth. It is heavy.
• 1:18:07
  Speaker 1: It is undeniable. Feel it pulling on you. It is
• 1:18:12
  Speaker 1: the most constant hug you will ever receive. It pulls
• 1:18:16
  Speaker 1: your shoulders down away from your ears. It pulls your
• 1:18:21
  Speaker 1: eyelids down over your eyes. It pulls the blood into
• 1:18:25
  Speaker 1: your back where it meets the mattress. Gravity is the anchor.
• 1:18:31
  Speaker 1: While your mind floats off into the multiverse, Your body
• 1:18:36
  Speaker 1: stays here. It stays on Earth. It stays in bed.
• 1:18:42
  Speaker 1: It is the tether that keeps you from dissolving into
• 1:18:44
  Speaker 1: the quantum phone. There is a concept in meditation called gravity.
• 1:18:51
  Speaker 1: In electronics, grounding means providing a safe path for excess
• 1:18:56
  Speaker 1: current to flow into the earth. In the human experience,
• 1:19:00
  Speaker 1: it means the same thing. You are full of excess
• 1:19:05
  Speaker 1: current right now. Excess thoughts. Excess worries. Excess data. Let
• 1:19:11
  Speaker 1: the gravity be your ground wire. Visualize the static electricity
• 1:19:17
  Speaker 1: of your day, the conversations, the screens, the traffic, draining
• 1:19:23
  Speaker 1: out of your body, flowing down through the mattress, through
• 1:19:27
  Speaker 1: the floorboards, through the concrete foundation, and into the soil
• 1:19:32
  Speaker 1: of the earth. The earth is big enough to take it.
• 1:19:37
  Speaker 1: It can handle your static. It has been spinning for
• 1:19:41
  Speaker 1: four and a half billion years. It has seen dinosaurs
• 1:19:45
  Speaker 1: and ice ages and meteor impacts. It can handle your
• 1:19:49
  Speaker 1: stress about the email you didn't send. Let it go.
• 1:19:54
  Speaker 1: Listen to the silence of the room again. Is it
• 1:19:58
  Speaker 1: truly silent? If you listen closely, past the ringing in
• 1:20:02
  Speaker 1: your ears, past the hum of the appliances, you might
• 1:20:07
  Speaker 1: hear the vacuum fluctuation, the hum of the nothing. It
• 1:20:12
  Speaker 1: is a white noise that has been playing since the
• 1:20:15
  Speaker 1: Big Bang. It is the sound of the universe breathing
• 1:20:20
  Speaker 1: in and out. Expansion and contraction. The universe is expanding,
• 1:20:28
  Speaker 1: you know. Dark energy is pushing the galaxies apart. The
• 1:20:32
  Speaker 1: space between things is getting bigger. Every second The distance
• 1:20:38
  Speaker 1: between us and the edge of the visible universe grows.
• 1:20:42
  Speaker 1: We are becoming more isolated. The sky will eventually, in
• 1:20:48
  Speaker 1: trillions of years, become dark as the other galaxies move
• 1:20:54
  Speaker 1: beyond our sight. That sounds lonely. But tonight, let's reframe it.
• 1:21:02
  Speaker 1: It is not loneliness. It is privacy. The universe is
• 1:21:08
  Speaker 1: drawing the curtains. It is turning down the lights. It
• 1:21:12
  Speaker 1: is creating a quiet, private space for our galaxy to rest.
• 1:21:18
  Speaker 1: You are in a private space too. Your room is
• 1:21:22
  Speaker 1: a sanctuary. A pocket universe where the laws of social
• 1:21:27
  Speaker 1: interaction and productivity are suspended. In here, you don't have
• 1:21:32
  Speaker 1: to be a photon. You don't have to be a
• 1:21:35
  Speaker 1: wave or a particle. You don't have to choose a path.
• 1:21:40
  Speaker 1: You can just exist in a state of rest. The
• 1:21:45
  Speaker 1: ancients believed that sleep was a journey to the underworld,
• 1:21:51
  Speaker 1: a nightly visit to the land of the spirits. We
• 1:21:55
  Speaker 1: know now that it is a biological maintenance cycle It
• 1:22:00
  Speaker 1: is a defragging of the hard drive. It is a
• 1:22:03
  Speaker 1: flushing of toxins from the brain tissue. But the science
• 1:22:08
  Speaker 1: doesn't make it less magical. The fact that you can
• 1:22:11
  Speaker 1: lose consciousness for eight hours, hallucinate vivid stories, and then
• 1:22:16
  Speaker 1: wake up refreshed and rebooted is a miracle of biology.
• 1:22:21
  Speaker 1: It is the closest we get to time travel. You
• 1:22:24
  Speaker 1: close your eyes, and instantly, hours pass. You skip forward
• 1:22:31
  Speaker 1: in time. Tonight, you are a time traveler preparing for launch.
• 1:22:37
  Speaker 1: The capsule is your bed. The destination is tomorrow morning.
• 1:22:43
  Speaker 1: But the launch sequence is slow. There is no countdown.
• 1:22:48
  Speaker 1: There is just a gradual fading of the lights. Let's
• 1:22:52
  Speaker 1: do a final check of the systems. Your feet, are
• 1:22:56
  Speaker 1: they relaxed? Or are they still ready to run? Let
• 1:23:01
  Speaker 1: the tension melt out of the arches. Let the toes uncurl.
• 1:23:07
  Speaker 1: The running is done. Your hands. Are they clenched? Are
• 1:23:12
  Speaker 1: they holding onto the phone? Or the sheet? Or a worry?
• 1:23:17
  Speaker 1: Open them. Let the fingers drift apart. The holding is done.
• 1:23:23
  Speaker 1: Your jaw. The strongest muscle in the face. It holds
• 1:23:28
  Speaker 1: so much unspoken language. Unclench it. Let the teeth part slightly.
• 1:23:36
  Speaker 1: The talking is done. Your eyes. The observers. The tools
• 1:23:43
  Speaker 1: that collapse the wave function. They have seen enough photons
• 1:23:48
  Speaker 1: for one day. Close the shutters. Stop. the measurement. Stop
• 1:23:54
  Speaker 1: the collapse. Let the world go back to being a wave.
• 1:23:59
  Speaker 1: Let the room around you dissolve into probability. You don't
• 1:24:03
  Speaker 1: need to know where the chair is right now. You
• 1:24:06
  Speaker 1: don't need to know where the door is. Let them
• 1:24:09
  Speaker 1: be fuzzy. Let them drift. You are entering the superposition state.
• 1:24:18
  Speaker 1: You are drifting between wakefulness and sleep. You are both
• 1:24:23
  Speaker 1: and neither. It is a comfortable gray, a soft fog.
• 1:24:30
  Speaker 1: Imagine yourself floating in that quantum liquid we talked about earlier,
• 1:24:35
  Speaker 1: the Bose-Einstein condensate, the super cold fluid where individual atoms
• 1:24:42
  Speaker 1: lose their identity and move as one. You are weightless.
• 1:24:48
  Speaker 1: You are frictionless. You are cool and still. The noise
• 1:24:53
  Speaker 1: of the day is just a ripple on the surface,
• 1:24:57
  Speaker 1: far above you. You are sinking deeper into the calm,
• 1:25:02
  Speaker 1: dark depths where the water is still. Down here, the
• 1:25:08
  Speaker 1: logic of the day does not apply. You don't need
• 1:25:12
  Speaker 1: to make sense. Dreams don't make sense. They are quantum narratives.
• 1:25:19
  Speaker 1: They jump from place to place. They change characters. They
• 1:25:25
  Speaker 1: ignore time. Dreams are the brain's way of playing with
• 1:25:29
  Speaker 1: the many worlds theory. Tonight, you might visit a world
• 1:25:34
  Speaker 1: where you can fly or a world where you live
• 1:25:38
  Speaker 1: in a house you've never seen. Enjoy the travel. The
• 1:25:43
  Speaker 1: Sleepless Scientist is signing off. The lab is closing down.
• 1:25:49
  Speaker 1: We are flipping the switches on the server racks. The
• 1:25:52
  Speaker 1: cooling fans are spinning down. The lights are clicking off,
• 1:25:57
  Speaker 1: bank by bank. Click, click, click. The darkness is total now.
• 1:26:05
  Speaker 1: But it is not empty. It is full of potential.
• 1:26:10
  Speaker 1: It is full of rest. You are safe in the dark.
• 1:26:14
  Speaker 1: You are part of the dark. Your atoms are humming
• 1:26:18
  Speaker 1: a lullaby that is 13.8 billion years old. Listen to it.
• 1:26:26
  Speaker 1: Let go. Sleep. But perhaps the sign-off was premature. The
• 1:26:34
  Speaker 1: silence of the room can be loud, and sometimes the
• 1:26:38
  Speaker 1: brain refuses the command to shut down. If you are
• 1:26:42
  Speaker 1: still listening, if the gravity of the mattress has not
• 1:26:45
  Speaker 1: yet pulled you into the unconscious, then we must go deeper.
• 1:26:50
  Speaker 1: We must restart the cooling fans. We must reignite the
• 1:26:55
  Speaker 1: pilot light of the laboratory. Because there are darker corners
• 1:26:59
  Speaker 1: of the quantum basement we have not yet swept with
• 1:27:03
  Speaker 1: our flashlight. Places where matter does not just act weird,
• 1:27:08
  Speaker 1: but acts with a kind of malicious compliance to the
• 1:27:12
  Speaker 1: laws of physics. So, keep your eyes closed. We are
• 1:27:18
  Speaker 1: going to lower the temperature of the lab again. We
• 1:27:21
  Speaker 1: are going back down to the place where heat dies,
• 1:27:25
  Speaker 1: because that is where the liquids start to misbehave in
• 1:27:28
  Speaker 1: a way that would give a hydrodynamics engineer nightmares. We
• 1:27:33
  Speaker 1: are going to talk about superfluids. Imagine a cup of
• 1:27:38
  Speaker 1: coffee sitting on that slate desk of yours. You stir
• 1:27:43
  Speaker 1: it with a spoon. The liquid swirls around. Eventually, the
• 1:27:49
  Speaker 1: swirling stops. The friction between the liquid and the cup,
• 1:27:54
  Speaker 1: and the friction between the molecules of the coffee itself,
• 1:27:58
  Speaker 1: drains the energy. The vortex dies. The coffee becomes still.
• 1:28:05
  Speaker 1: This is viscosity. It is the internal friction of a fluid.
• 1:28:10
  Speaker 1: It is why swimming through molasses is harder than swimming
• 1:28:15
  Speaker 1: through water. But in the quantum realm, there is a
• 1:28:19
  Speaker 1: substance called liquid helium-4. If we cool this helium down
• 1:28:25
  Speaker 1: to near absolute zero, it undergoes a phase change. It
• 1:28:30
  Speaker 1: stops being a normal fluid and becomes a superfluid And
• 1:28:34
  Speaker 1: a superfluid has zero viscosity. None. It has... zero friction.
• 1:28:41
  Speaker 1: If you stirred a cup of superfluid coffee, it would
• 1:28:45
  Speaker 1: never stop swirling. It would rotate forever. A million years
• 1:28:50
  Speaker 1: from now, that vortex would still be spinning with the
• 1:28:54
  Speaker 1: exact same speed as the day you stirred it. It
• 1:28:59
  Speaker 1: is a perpetual motion machine in a cup, but it
• 1:29:04
  Speaker 1: gets creepier. Because it has no friction, a superfluid does
• 1:29:10
  Speaker 1: not like to be contained. If you put it in
• 1:29:14
  Speaker 1: a beaker, it will form a thin film that creeps
• 1:29:17
  Speaker 1: up the walls of the glass. It climbs against gravity.
• 1:29:22
  Speaker 1: It crawls up the side, over the rim, and drips
• 1:29:25
  Speaker 1: down the outside of the container until the beaker is empty.
• 1:29:29
  Speaker 1: Picture that in the dark. A liquid that refuses to
• 1:29:32
  Speaker 1: stay in the cup. A zombie fluid that silently escapes
• 1:29:37
  Speaker 1: its prison by crawling up the walls like a wet ghost.
• 1:29:41
  Speaker 1: It flows through pores in ceramic that are so small
• 1:29:45
  Speaker 1: even air molecules cannot get through. It is the ultimate
• 1:29:50
  Speaker 1: escape artist. It behaves this way because, at these temperatures,
• 1:29:56
  Speaker 1: the helium atoms have lost their individuality. They have become
• 1:30:00
  Speaker 1: that Bose-Einstein condensate we mentioned earlier. They are all marching
• 1:30:06
  Speaker 1: in perfect lockstep. If one atom moves, they all move.
• 1:30:13
  Speaker 1: It is a fluid with a hive mind. So, as
• 1:30:17
  Speaker 1: you lie there, be grateful for friction. Be grateful that
• 1:30:22
  Speaker 1: the water in your glass stays in your glass. Be
• 1:30:25
  Speaker 1: grateful that your blood has viscosity and pumps through your
• 1:30:30
  Speaker 1: veins with resistance. Friction is the force that allows us
• 1:30:35
  Speaker 1: to grip the world. Without it, everything would be a
• 1:30:38
  Speaker 1: slippery sliding chaos, flowing endlessly without purpose. Friction is the
• 1:30:44
  Speaker 1: drag that slows you down, but it is also the
• 1:30:48
  Speaker 1: traction that lets you move forward. It is a paradox
• 1:30:52
  Speaker 1: you can feel in your sheets. The friction of the
• 1:30:56
  Speaker 1: cotton against your skin is what keeps you warm. It
• 1:30:59
  Speaker 1: is what keeps the blanket in place. Now, let us
• 1:31:03
  Speaker 1: shift our gaze from the fluids that flow forever to
• 1:31:07
  Speaker 1: the particles that refuse to touch. We talked about how
• 1:31:11
  Speaker 1: you are mostly empty space, and how quantum rules keep
• 1:31:15
  Speaker 1: you solid. But we need to give a name to
• 1:31:20
  Speaker 1: the sheriff of that town. We need to talk about
• 1:31:23
  Speaker 1: the Pauli exclusion principle. Wolfgang Pauli was an Austrian physicist
• 1:31:28
  Speaker 1: known for being a brutal critic. He once dismissed a
• 1:31:32
  Speaker 1: bad paper by saying, this isn't right. It's not even wrong.
• 1:31:39
  Speaker 1: He demanded rigor, and the principle named after him is
• 1:31:43
  Speaker 1: the most rigorous rule in the universe. It states that
• 1:31:48
  Speaker 1: two identical fermions, particles like electrons, protons, and neutrons, cannot
• 1:31:55
  Speaker 1: occupy the exact same quantum state at the same time.
• 1:32:00
  Speaker 1: Think of it as a parking lot with very strict rules.
• 1:32:04
  Speaker 1: Each parking space can only hold one car. If a
• 1:32:08
  Speaker 1: car is already in the spot, you cannot park there.
• 1:32:12
  Speaker 1: You have to find another spot, one level up or
• 1:32:16
  Speaker 1: one level down. This sounds simple, but it is the
• 1:32:21
  Speaker 1: reason you are not collapsing into a black hole right now.
• 1:32:25
  Speaker 1: The electrons in your atoms are fermions. They are the cars.
• 1:32:33
  Speaker 1: As gravity tries to crush your atoms together, the electrons resist.
• 1:32:39
  Speaker 1: They say, no. This spot is taken. You cannot come here.
• 1:32:48
  Speaker 1: They push back. Not with an electric force, but with
• 1:32:52
  Speaker 1: a degeneracy pressure. It is a pressure born purely from
• 1:32:56
  Speaker 1: the rule that says, I am here, so you must
• 1:32:59
  Speaker 1: be there. It is the ultimate social distancing. Electrons refuse
• 1:33:05
  Speaker 1: to share their personal space. This refusal is powerful. It
• 1:33:11
  Speaker 1: is strong enough to hold up a star. When a
• 1:33:15
  Speaker 1: star like our sun eventually dies and collapses, it will
• 1:33:20
  Speaker 1: turn into a white dwarf. A white dwarf is a
• 1:33:24
  Speaker 1: star packed so tight that a teaspoon of it weighs
• 1:33:28
  Speaker 1: as much as a truck. But it stops collapsing. Why?
• 1:33:32
  Speaker 1: Because of the electron degeneracy pressure. The electrons are screaming
• 1:33:37
  Speaker 1: back off. It is a comforting thought. The structural integrity
• 1:33:43
  Speaker 1: of your body, the hardness of the floor, the strength
• 1:33:47
  Speaker 1: of the steel in the buildings around you, it all
• 1:33:50
  Speaker 1: comes down to the stubbornness of subatomic particles refusing to
• 1:33:55
  Speaker 1: share a bunk bed. You are built on a foundation
• 1:33:59
  Speaker 1: of exclusion, a microscopic boundaries policy that has been enforced
• 1:34:05
  Speaker 1: since the dawn of time. But not all particles are fermions.
• 1:34:11
  Speaker 1: Some are bosons. Bosons are the hippies of the particle world.
• 1:34:18
  Speaker 1: They do not follow the Pauli exclusion principle. They love
• 1:34:23
  Speaker 1: to share. You can pack a trillion bosons into the
• 1:34:26
  Speaker 1: same quantum state and they will happily sit right on
• 1:34:30
  Speaker 1: top of each other. Photons, particles of light, are bosons.
• 1:34:35
  Speaker 1: That is why you can shine two flashlights beams through
• 1:34:39
  Speaker 1: each other and they don't bounce off. They just pass through.
• 1:34:44
  Speaker 1: That is why lasers work. You can stack infinite light
• 1:34:49
  Speaker 1: into a single beam. So, the universe is divided into
• 1:34:55
  Speaker 1: two camps. The isolationists who build structure, matter, and the
• 1:35:01
  Speaker 1: collectivists who carry force, light. It is a delicate balance
• 1:35:05
  Speaker 1: between the hard, stubborn stuff that makes you and the
• 1:35:09
  Speaker 1: soft overlapping stuff that lets you see. Speaking of things
• 1:35:13
  Speaker 1: that pass through you, let us talk about the ghost stream.
• 1:35:17
  Speaker 1: Right now, as you lie in the dark, you are
• 1:35:21
  Speaker 1: being bombarded. You are being riddled with bullets, but you
• 1:35:25
  Speaker 1: cannot feel them. They are called neutrinos. Neutrinos are subatomic
• 1:35:31
  Speaker 1: particles that are born in the nuclear furnace of the sun.
• 1:35:36
  Speaker 1: Every time four hydrogen nuclei fuse to make helium in
• 1:35:40
  Speaker 1: the sun's core, they release neutrinos. These particles are incredibly antisocial.
• 1:35:47
  Speaker 1: They have almost no mass. They have no electric charge.
• 1:35:53
  Speaker 1: They do not feel the strong nuclear force. They barely
• 1:35:58
  Speaker 1: feel gravity. To a neutrino, solid matter is smoke. It
• 1:36:03
  Speaker 1: is less than smoke. To a neutrino, The Earth is
• 1:36:07
  Speaker 1: not a rock. It is a thin fog. They fly
• 1:36:12
  Speaker 1: straight through the planet without even slowing down. Every second,
• 1:36:17
  Speaker 1: about 65 billion neutrinos pass through every square centimeter of
• 1:36:22
  Speaker 1: your body. 65 billion every second. Through your thumbnail. They
• 1:36:30
  Speaker 1: are passing through your roof. through your skull, through your brain,
• 1:36:34
  Speaker 1: through the bed, through the floor, through the crust of
• 1:36:37
  Speaker 1: the earth, through the molten iron core, and out the
• 1:36:42
  Speaker 1: other side into space, and you feel nothing. They are
• 1:36:47
  Speaker 1: the ghost particles of the universe. They are the silent witnesses.
• 1:36:53
  Speaker 1: They were there at the beginning of the universe, and
• 1:36:57
  Speaker 1: they will be there at the end, flying through the void,
• 1:37:02
  Speaker 1: untouched and untouching. Occasionally, very occasionally, a neutrino will hit
• 1:37:09
  Speaker 1: an atom in your body. But it is so rare
• 1:37:14
  Speaker 1: that you would have to wait years for it to
• 1:37:16
  Speaker 1: happen once. And even then, it is just a tiny
• 1:37:21
  Speaker 1: spark of energy lost in the noise of your biology.
• 1:37:27
  Speaker 1: There is a strange peace in knowing you are porous,
• 1:37:31
  Speaker 1: You feel solid. You feel like a barrier. But to
• 1:37:35
  Speaker 1: the universe, you are transparent. You are a window. The
• 1:37:40
  Speaker 1: cosmos is streaming through you right now, carrying information from
• 1:37:44
  Speaker 1: the heart of the sun. And you are none the wiser.
• 1:37:50
  Speaker 1: Let the ghosts pass. You cannot stop them anyway. But
• 1:37:54
  Speaker 1: while the neutrinos are ignoring you, there is something else
• 1:37:58
  Speaker 1: in the room that is paying very close attention to
• 1:38:02
  Speaker 1: the geometry of space. Let's talk about the Casimir effect.
• 1:38:07
  Speaker 1: This is a phenomenon that proves that nothing pushes back.
• 1:38:12
  Speaker 1: Imagine we have two metal plates, perfect mirrors. We place
• 1:38:18
  Speaker 1: them in a vacuum, no air, no dust, just empty space.
• 1:38:25
  Speaker 1: We bring the plates very, very close together, micrometers apart.
• 1:38:31
  Speaker 1: According to classical physics, there is nothing between them and
• 1:38:36
  Speaker 1: nothing outside them. They should just hang there, but they don't.
• 1:38:41
  Speaker 1: They are pushed together. A mysterious force shoves them towards
• 1:38:47
  Speaker 1: each other. Why? Why? because of the waves in the vacuum.
• 1:38:52
  Speaker 1: Remember the quantum foam, the boiling sea of virtual particles
• 1:38:59
  Speaker 1: and waves. Those waves come in all sizes, big wavelengths,
• 1:39:06
  Speaker 1: small wavelengths. Outside the plates, in the open space, all
• 1:39:11
  Speaker 1: sizes of waves can exist, big rolling swells and tiny ripples.
• 1:39:17
  Speaker 1: But inside the narrow gap between the plates, the big
• 1:39:21
  Speaker 1: waves don't fit. They are excluded. Only the small, short
• 1:39:28
  Speaker 1: waves can fit in the gap. This means there are
• 1:39:31
  Speaker 1: fewer waves pushing from the inside than there are pushing
• 1:39:35
  Speaker 1: from the outside. The pressure of the vacuum is higher
• 1:39:39
  Speaker 1: on the outside than on the inside. So, the empty
• 1:39:43
  Speaker 1: space itself crushes the plates together. It is a force
• 1:39:47
  Speaker 1: from nothing. It is the weight of the missing waves.
• 1:39:51
  Speaker 1: Think about two ships bobbing on a rough ocean. If
• 1:39:55
  Speaker 1: they get too close, the water between them gets calm
• 1:39:59
  Speaker 1: because the big waves can't fit. The rough ocean on
• 1:40:02
  Speaker 1: the outside pushes the ships together. This is happening on
• 1:40:07
  Speaker 1: a nanoscale all around you. The vacuum is not passive.
• 1:40:13
  Speaker 1: It is an active pressurized ocean. If you bring two
• 1:40:18
  Speaker 1: things close enough together, the universe will try to seal
• 1:40:23
  Speaker 1: the gap. It wants to close the distance. It is
• 1:40:28
  Speaker 1: a subtle reminder that separation requires energy. Intimacy is the
• 1:40:34
  Speaker 1: default state when the noise is removed. The universe favors
• 1:40:39
  Speaker 1: the close. Now, let us step away from the forces
• 1:40:43
  Speaker 1: and look at the strange logic of quantum computing. You
• 1:40:47
  Speaker 1: might have heard the term, usually followed by stock market buzzwords,
• 1:40:51
  Speaker 1: but the science of it is a perfect bedtime paradox.
• 1:40:55
  Speaker 1: It all comes down to the difference between a bit
• 1:40:59
  Speaker 1: and a qubit. In the computer or phone you are
• 1:41:02
  Speaker 1: using to listen to this, information is stored in bits.
• 1:41:07
  Speaker 1: A bit is a switch. It is either zero or one,
• 1:41:11
  Speaker 1: off or on. It is binary. It is decisive. This
• 1:41:19
  Speaker 1: is the logic of the day. Yes or no. True
• 1:41:24
  Speaker 1: or false. But a quantum computer uses qubits. And a
• 1:41:30
  Speaker 1: qubit relies on superposition. A qubit is not zero or one.
• 1:41:37
  Speaker 1: It is a complex mixture of zero and one at
• 1:41:41
  Speaker 1: the same time. It is a sphere of possibilities. Imagine
• 1:41:47
  Speaker 1: a coin. A classical bit is a coin that has landed.
• 1:41:51
  Speaker 1: It is heads or it is tails. A qubit is
• 1:41:56
  Speaker 1: a coin that is spinning on the table. It is
• 1:41:59
  Speaker 1: a blur of heads and tails. It contains more information
• 1:42:04
  Speaker 1: because it is in motion. If you try to solve
• 1:42:09
  Speaker 1: a maze with a classical computer, It has to try
• 1:42:12
  Speaker 1: every path one by one. Left turn. Dead end. Go back.
• 1:42:20
  Speaker 1: Right turn. Dead end. Go back. It takes time. A
• 1:42:25
  Speaker 1: quantum computer using the logic of the qubit can try
• 1:42:30
  Speaker 1: every single path of the maze simultaneously. It floods the
• 1:42:35
  Speaker 1: maze like water. It finds the exit instantly because it
• 1:42:39
  Speaker 1: was never restricted to being in one place at one time.
• 1:42:44
  Speaker 1: It is the power of indecision. We are taught that
• 1:42:49
  Speaker 1: indecision is bad. We are taught to make up our minds.
• 1:42:55
  Speaker 1: Pick a major, pick a career, pick a side. But
• 1:43:00
  Speaker 1: the quantum world tells us that indecision is a superpower.
• 1:43:05
  Speaker 1: Keeping your options open, remaining in a state of superposition,
• 1:43:10
  Speaker 1: allows you to explore all possibilities at once. The moment
• 1:43:16
  Speaker 1: you choose, the moment you collapse the wave function, you
• 1:43:20
  Speaker 1: lose that power. You become a classical bit. You become
• 1:43:25
  Speaker 1: a single frozen outcome. So, as you lie in the dark,
• 1:43:32
  Speaker 1: do not worry about the decisions you haven't made yet.
• 1:43:37
  Speaker 1: Do not worry about the uncertainty of tomorrow. You are
• 1:43:41
  Speaker 1: just being a cubit. You are processing all the paths.
• 1:43:46
  Speaker 1: You are spinning on the table. And as long as
• 1:43:50
  Speaker 1: you are spinning, you are infinite. There is plenty of
• 1:43:54
  Speaker 1: time to land later. For now, just spin. Let's drift
• 1:44:00
  Speaker 1: to a concept that challenges the flow of time itself.
• 1:44:06
  Speaker 1: We touched on the arrow of time. But there is
• 1:44:08
  Speaker 1: a new form of matter that breaks the symmetry of
• 1:44:13
  Speaker 1: the clock. They are called time crystals. It sounds like
• 1:44:18
  Speaker 1: something from a fantasy novel, a gem you would put
• 1:44:21
  Speaker 1: in a wizard's staff. But it is a real phase
• 1:44:26
  Speaker 1: of matter created in a lab. Normal crystals, like the
• 1:44:31
  Speaker 1: salt in your kitchen or the diamond in a ring,
• 1:44:35
  Speaker 1: have a pattern that repeats in space. Adam here, Adam there,
• 1:44:40
  Speaker 1: Adam here. A repeating grid. They break spatial translation symmetry.
• 1:44:47
  Speaker 1: A time crystal is different. It has a pattern that
• 1:44:51
  Speaker 1: repeats in time. If you poke a normal system, it
• 1:44:56
  Speaker 1: usually settles down. It reaches equilibrium. It stops moving. But
• 1:45:03
  Speaker 1: if you poke a time crystal, it reacts in a
• 1:45:06
  Speaker 1: repeating loop. that never loses energy. It ticks. Tick, tick, tick. Forever.
• 1:45:16
  Speaker 1: Without any energy source, it is a system that prevents
• 1:45:20
  Speaker 1: itself from ever reaching thermal equilibrium. It refuses to settle.
• 1:45:27
  Speaker 1: It refuses to die. It is stuck in a loop
• 1:45:31
  Speaker 1: of time, flipping back and forth between states, eternally keeping
• 1:45:35
  Speaker 1: the beat, It breaks time-translation symmetry. It says that this
• 1:45:40
  Speaker 1: moment is not the same as the next moment, but
• 1:45:44
  Speaker 1: the moment after that will be exactly the same. It
• 1:45:48
  Speaker 1: is a heartbeat of matter. Imagine a jelly that, when
• 1:45:54
  Speaker 1: you tap it, jiggles forever, never stopping, never slowing down.
• 1:46:01
  Speaker 1: That is the essence of a time crystal. It defies
• 1:46:06
  Speaker 1: the laws of thermodynamics that say everything must eventually run
• 1:46:10
  Speaker 1: down and stop. It cheats the heat death of the universe.
• 1:46:15
  Speaker 1: It is a reminder that the rules we think are absolute,
• 1:46:20
  Speaker 1: like the rule that you must get tired, or the
• 1:46:23
  Speaker 1: rule that things must stop, have loopholes. The universe is
• 1:46:30
  Speaker 1: full of loopholes, and maybe, just maybe, Consciousness is a
• 1:46:36
  Speaker 1: bit like a time crystal, a pattern that repeats, a
• 1:46:41
  Speaker 1: rhythm that sustains itself against the entropy of the world.
• 1:46:46
  Speaker 1: You close your eyes, you lose yourself, and then you
• 1:46:50
  Speaker 1: wake up and the pattern resumes. You are a repeating
• 1:46:55
  Speaker 1: event in the fabric of space-time. Now, let us zoom
• 1:47:01
  Speaker 1: out from the crystals and look at the field that
• 1:47:05
  Speaker 1: fills the entire universe. The invisible molasses. The Higgs field.
• 1:47:13
  Speaker 1: For a long time, physicists couldn't figure out why things
• 1:47:17
  Speaker 1: have mass. Why does an electron weigh something? Why is
• 1:47:22
  Speaker 1: a proton heavy? Why isn't everything just flying around at
• 1:47:28
  Speaker 1: the speed of light, weightless and free? If there was
• 1:47:33
  Speaker 1: no mass, There would be no atoms, no stars, no you,
• 1:47:40
  Speaker 1: just light zipping through the void. In the 1960s, Peter
• 1:47:45
  Speaker 1: Higgs and others proposed a solution. They suggested that the
• 1:47:50
  Speaker 1: entire universe is filled with an invisible field. Think of
• 1:47:54
  Speaker 1: it like a cosmic ocean of syrup or a room
• 1:47:58
  Speaker 1: filled with heavy, thick snow. When a particle moves through
• 1:48:03
  Speaker 1: this field, it interacts with it. The field drags on it.
• 1:48:09
  Speaker 1: It clings to it. This drag is what we call mass.
• 1:48:15
  Speaker 1: Some particles, like photons, slice through the field without touching it.
• 1:48:20
  Speaker 1: They don't interact, so they have no mass. They fly
• 1:48:26
  Speaker 1: at the speed of light. Other particles, like electrons and quarks,
• 1:48:32
  Speaker 1: get bogged down. They have to wade through the syrup.
• 1:48:37
  Speaker 1: They get heavy. They slow down. You are heavy because
• 1:48:42
  Speaker 1: you are interacting with the Higgs field. Your body is
• 1:48:46
  Speaker 1: pushing against this invisible ocean, and the ocean is pushing back.
• 1:48:52
  Speaker 1: If the Higgs field suddenly vanished, your mass would disappear.
• 1:48:57
  Speaker 1: Your atoms would disintegrate. You would explode into a burst
• 1:49:02
  Speaker 1: of light and radiation moving at maximum velocity. The heaviness
• 1:49:07
  Speaker 1: you feel in your limbs right now, that pleasant, sinking
• 1:49:12
  Speaker 1: feeling into the mattress, is not just gravity. It is
• 1:49:16
  Speaker 1: the result of your fundamental particles wading through the cosmic molasses.
• 1:49:22
  Speaker 1: You are anchored to reality by this field. It is
• 1:49:25
  Speaker 1: the glue of existence. It is called the God particle
• 1:49:30
  Speaker 1: in the media, which scientists hate. They prefer to call
• 1:49:35
  Speaker 1: it the Higgs boson. but the name captures the magnitude
• 1:49:40
  Speaker 1: of it. It is the particle that gives substance to
• 1:49:43
  Speaker 1: the universe. Without it, everything is just a ghost. With it,
• 1:49:49
  Speaker 1: we have weight. We have consequence. We have a place
• 1:49:55
  Speaker 1: to rest. Feel that weight now. Feel the Higgs field
• 1:50:01
  Speaker 1: doing its work. It is giving you presence. It is
• 1:50:05
  Speaker 1: telling the universe This object is here. It matters. It
• 1:50:12
  Speaker 1: has substance. Let the field hold you. You don't have
• 1:50:18
  Speaker 1: to hold yourself up. The physics is doing it for you.
• 1:50:23
  Speaker 1: We have talked about the very small and the very
• 1:50:26
  Speaker 1: cold and the very heavy. But what about the very dark?
• 1:50:32
  Speaker 1: We cannot talk about the weirdness of the universe without
• 1:50:35
  Speaker 1: acknowledging that we only know about 5% of it. Look
• 1:50:40
  Speaker 1: at the room around you in your mind's eye. The walls,
• 1:50:45
  Speaker 1: the air, the dust. That is baryonic matter. Normal stuff. Protons, neutrons, electrons.
• 1:50:58
  Speaker 1: That accounts for 5% of the energy budget of the universe.
• 1:51:03
  Speaker 1: The other 95% we have no idea what it is.
• 1:51:07
  Speaker 1: 27% is dark matter. Dark matter is the ghost gravity.
• 1:51:15
  Speaker 1: When we look at galaxies, we see them spinning, but
• 1:51:20
  Speaker 1: they are spinning too fast. Based on the visible stars,
• 1:51:24
  Speaker 1: there isn't enough gravity to hold them together. They should
• 1:51:28
  Speaker 1: be flinging themselves apart. Stars should be ejected into the void,
• 1:51:33
  Speaker 1: but the galaxies hold together. Something invisible is gripping them.
• 1:51:39
  Speaker 1: A massive, unseen halo of stuff that has gravity but
• 1:51:44
  Speaker 1: does not interact with light. It passes right through you,
• 1:51:49
  Speaker 1: just like the neutrinos. But it is heavy. It is
• 1:51:53
  Speaker 1: likely that right now, dark matter is flowing through your bedroom.
• 1:52:00
  Speaker 1: It is clumping in the corners. It is drifting through
• 1:52:03
  Speaker 1: the walls, an invisible scaffolding that holds the shape of
• 1:52:08
  Speaker 1: the Milky Way together. You are sleeping inside a galaxy
• 1:52:12
  Speaker 1: that is mostly made of stuff you cannot see and
• 1:52:16
  Speaker 1: will never touch. And then there is the remaining 68%
• 1:52:23
  Speaker 1: dark energy. If dark matter is the glue that holds
• 1:52:26
  Speaker 1: things together, dark energy is the wind that blows them apart.
• 1:52:32
  Speaker 1: It is the energy of empty space. And it is pushing.
• 1:52:38
  Speaker 1: It is accelerating the expansion of the universe. It is
• 1:52:42
  Speaker 1: a force of anti-gravity. A cosmic repulsion. So you are
• 1:52:47
  Speaker 1: caught in a tug of war. The dark matter is
• 1:52:51
  Speaker 1: trying to pull the universe into a ball. The dark
• 1:52:56
  Speaker 1: energy is trying to tear the universe into shreds. And
• 1:52:59
  Speaker 1: you are in the middle. made of the rare, precious
• 1:53:03
  Speaker 1: 5% of normal matter. Just trying to get a good
• 1:53:07
  Speaker 1: night's sleep. It puts your problems into perspective. The universe
• 1:53:13
  Speaker 1: is fighting a civil war over the geometry of space-time,
• 1:53:17
  Speaker 1: and you are worried about whether you... Locked the front door?
• 1:53:22
  Speaker 1: The door is locked. The protons are holding. The Higgs
• 1:53:27
  Speaker 1: field is sticky. You are safe. But let's return to
• 1:53:32
  Speaker 1: something a little more intimate. Something that happens inside your
• 1:53:37
  Speaker 1: own skull. The concept of the quantum brain. For decades,
• 1:53:43
  Speaker 1: neuroscientists treated the brain like a wet computer. Neurons are wires.
• 1:53:49
  Speaker 1: Synapses are switches. Electrical signals travel down the wire, flip
• 1:53:55
  Speaker 1: the switch, and create a thought. Classical physics. But recently,
• 1:54:01
  Speaker 1: The sleepless scientist has been reading papers that suggest the
• 1:54:05
  Speaker 1: brain might be a quantum computer. There are structures inside
• 1:54:11
  Speaker 1: your neurons called microtubules. They are tiny tube-like skeletons that
• 1:54:17
  Speaker 1: give the cell its shape. Some physicists, most notably Roger Penrose,
• 1:54:22
  Speaker 1: have argued that these microtubules are small enough to isolate
• 1:54:26
  Speaker 1: quantum effects. They suggest that consciousness The feeling of being
• 1:54:32
  Speaker 1: you is not a computation. It is a quantum collapse.
• 1:54:37
  Speaker 1: They call it orchestrated objective reduction. The idea is that
• 1:54:43
  Speaker 1: your brain is constantly generating a superposition of possibilities, a
• 1:54:48
  Speaker 1: cloud of maybe thoughts. And then, at a specific moment,
• 1:54:56
  Speaker 1: the wave function collapses and a single conscious moment is born.
• 1:55:02
  Speaker 1: I am. Then the wave builds up again and collapses again.
• 1:55:11
  Speaker 1: I am. Consciousness is not a continuous stream. It is
• 1:55:17
  Speaker 1: a series of quantum beats, a strobe light of existence.
• 1:55:23
  Speaker 1: We think we are fluid, but we might be discrete.
• 1:55:27
  Speaker 1: We are flickering into existence 40 times a second. If
• 1:55:31
  Speaker 1: this is true, then sleep is just a longer pause
• 1:55:35
  Speaker 1: between the beats. It is a moment where the orchestra
• 1:55:39
  Speaker 1: stops playing and the wave function is allowed to drift
• 1:55:44
  Speaker 1: without collapsing. When you dream, maybe you are exploring the
• 1:55:49
  Speaker 1: uncollapsed wave. You are surfing the superposition without the harsh
• 1:55:54
  Speaker 1: reality of the reduction. It explains Why dreams are so weird.
• 1:56:00
  Speaker 1: Why one minute you are in your childhood home, and
• 1:56:04
  Speaker 1: the next you are on a boat. In the quantum view,
• 1:56:08
  Speaker 1: both those locations were in the superposition. You just visited
• 1:56:13
  Speaker 1: both without filtering them. So, do not be afraid of
• 1:56:17
  Speaker 1: the drift. You are just letting your microtubules rest. You
• 1:56:21
  Speaker 1: are letting the quantum soup simmer without trying to ladle
• 1:56:25
  Speaker 1: it into a bowl. Let the strobe light slow down.
• 1:56:30
  Speaker 1: Let the flickers get further apart. The gap between the
• 1:56:35
  Speaker 1: I and the am is growing. I am I am.
• 1:56:43
  Speaker 1: And in that gap, there is peace. But we are
• 1:56:47
  Speaker 1: not done yet. There is one more paradox we need
• 1:56:51
  Speaker 1: to inspect before we truly shut down the core. The
• 1:56:55
  Speaker 1: Paradox of the Boltzmann Brain Ludwig Boltzmann was a pioneer
• 1:57:02
  Speaker 1: of thermodynamics. He understood entropy, the tendency of the universe
• 1:57:07
  Speaker 1: to get messy. He knew that it is very unlikely
• 1:57:11
  Speaker 1: for atoms to randomly arrange themselves into something organized. It
• 1:57:16
  Speaker 1: is much more likely for them to be a chaotic gas.
• 1:57:20
  Speaker 1: But here we are. We are organized. The universe has
• 1:57:25
  Speaker 1: stars and planets and people. This is a very low
• 1:57:31
  Speaker 1: entropy state. It is statistically incredibly unlikely. So Boltzmann proposed
• 1:57:39
  Speaker 1: a disturbing idea. He said that in an infinite universe
• 1:57:44
  Speaker 1: that lasts for an infinite amount of time, particles will
• 1:57:47
  Speaker 1: randomly collide. Eventually, just by pure chance, they will bump
• 1:57:53
  Speaker 1: into each other in a way that forms a structure. Usually,
• 1:57:57
  Speaker 1: it will just be a rock or a dust bunny.
• 1:58:00
  Speaker 1: But if you wait long enough, an eternity, eventually, the
• 1:58:07
  Speaker 1: random fluctuations of the vacuum will spawn. assemble a human brain,
• 1:58:13
  Speaker 1: complete with memories, complete with the feeling of existing. This
• 1:58:19
  Speaker 1: brain would exist for just a second, floating in the void,
• 1:58:24
  Speaker 1: hallucinating a reality, and then dissolve back into the chaos.
• 1:58:30
  Speaker 1: This is a Boltzmann brain. The paradox is this. It
• 1:58:35
  Speaker 1: is statistically trillions of times more likely for a single
• 1:58:39
  Speaker 1: brain to randomly pop into existence than for an entire
• 1:58:43
  Speaker 1: universe to be created with billions of stars and billions
• 1:58:48
  Speaker 1: of years of evolution. So, the math asks a rude question.
• 1:58:54
  Speaker 1: Are you a real person with a history? Living history?
• 1:58:59
  Speaker 1: in a real universe? Or are you a Boltzmann brain
• 1:59:02
  Speaker 1: that just materialized in the void a split second ago,
• 1:59:06
  Speaker 1: complete with false memories of a life you never lived,
• 1:59:09
  Speaker 1: listening to a hallucinated YouTube video about quantum mechanics? You
• 1:59:13
  Speaker 1: cannot prove you aren't. Your memory of breakfast this morning?
• 1:59:18
  Speaker 1: Implanted by the random collision of particles. Your memory of childhood?
• 1:59:25
  Speaker 1: Just a pattern of neurons that formed by accident. It
• 1:59:29
  Speaker 1: is the ultimate solipsism. But before you panic, remember the
• 1:59:34
  Speaker 1: sleepless scientist motto. If you can't change it, don't worry
• 1:59:38
  Speaker 1: about it. If you are a Boltzmann brain, you are
• 1:59:42
  Speaker 1: a very detailed one. The hallucination is consistent. The bed
• 1:59:47
  Speaker 1: feels soft. The voice is deep. The concepts are interesting.
• 1:59:54
  Speaker 1: You might as well enjoy the ride. And if you
• 1:59:58
  Speaker 1: are a real person, evolved from stardust over billions of years,
• 2:00:03
  Speaker 1: then you are a triumph of order over chaos. You
• 2:00:07
  Speaker 1: are a statistical miracle. You are a fortress of structure
• 2:00:12
  Speaker 1: in a universe that wants to be soup. Either way,
• 2:00:16
  Speaker 1: you exist. And either way, you are tired. The Boltzmann
• 2:00:22
  Speaker 1: brain needs to power down just as much energy as
• 2:00:27
  Speaker 1: the biological one. Let's step back from the edge of
• 2:00:31
  Speaker 1: existential dread and look at something beautiful, the geometry of spin.
• 2:00:37
  Speaker 1: We mentioned earlier that electrons have spin up or down,
• 2:00:42
  Speaker 1: but we didn't explain how weird that actually is. If
• 2:00:48
  Speaker 1: you take a ball and rotate it 360 degrees, one
• 2:00:53
  Speaker 1: full circle, it looks the same. It is back to
• 2:00:57
  Speaker 1: where it started. If you take a playing card, the
• 2:01:02
  Speaker 1: Queen of Hearts, and rotate it 360 degrees, she is
• 2:01:07
  Speaker 1: upright again. But an electron, an electron has spin one half.
• 2:01:15
  Speaker 1: This means that if you rotate an electron 360 degrees,
• 2:01:20
  Speaker 1: it is not back to where it started. It has changed.
• 2:01:24
  Speaker 1: it is actually facing the opposite way. Mathematically speaking, you
• 2:01:29
  Speaker 1: have to rotate an electron 720 degrees, two full circles,
• 2:01:35
  Speaker 1: to get it back to its original state. Think about that.
• 2:01:39
  Speaker 1: A particle that has to spin around twice to see
• 2:01:42
  Speaker 1: the same view once, it implies that the electron sees
• 2:01:46
  Speaker 1: a bigger universe than we do. It sees a layer
• 2:01:50
  Speaker 1: of geometry that we are blind to, It suggests that
• 2:01:54
  Speaker 1: space itself is twisted in a way that requires a
• 2:01:57
  Speaker 1: double loop to traverse. It is like walking around your house.
• 2:02:02
  Speaker 1: You walk around the block once, and you arrive at
• 2:02:05
  Speaker 1: your front door, but the house is upside down. You
• 2:02:09
  Speaker 1: have to walk around the block a second time to
• 2:02:13
  Speaker 1: get the house right side up. That is the world
• 2:02:16
  Speaker 1: the electron lives in, a Mobius strip of reality. It
• 2:02:21
  Speaker 1: is dizzying. But it is also a sign that there
• 2:02:25
  Speaker 1: is more room than we think. We feel boxed in
• 2:02:29
  Speaker 1: by our three dimensions. Up, down, left, right, forward, back.
• 2:02:37
  Speaker 1: But the particles know secret directions. They know the shortcuts.
• 2:02:43
  Speaker 1: So when you feel trapped, trapped by stress, trapped by
• 2:02:47
  Speaker 1: the ceiling, trapped by the dark, remember the electrons. Remember
• 2:02:54
  Speaker 1: that a full circle is not the end. There is
• 2:02:59
  Speaker 1: a second loop. There is a hidden path that brings
• 2:03:03
  Speaker 1: you back to wholeness. You just have to keep spinning.
• 2:03:08
  Speaker 1: The lab is getting colder now. The liquid helium is
• 2:03:12
  Speaker 1: creeping up the beaker. The time crystals are ticking. The
• 2:03:16
  Speaker 1: neutrinos are streaming. We are reaching the limit of what
• 2:03:20
  Speaker 1: the conscious mind can hold. The paradoxes are piling up
• 2:03:25
  Speaker 1: like unread books on a nightstand. The cat is alive
• 2:03:31
  Speaker 1: and dead. The particle is here and there. The vacuum
• 2:03:37
  Speaker 1: is empty and full. The time is flowing and frozen.
• 2:03:42
  Speaker 1: You are real and a hallucination. It is too much.
• 2:03:47
  Speaker 1: The logic circuits are overheating. And that is good. That
• 2:03:54
  Speaker 1: is the point. We overload the analysis engine so that
• 2:03:58
  Speaker 1: it is forced to shut down. We feed the brain
• 2:04:01
  Speaker 1: so much impossible data that it finally throws up its
• 2:04:05
  Speaker 1: hands and says, fine, I quit. Let's go to sleep.
• 2:04:12
  Speaker 1: Surrender to the confusion. Surrender to the fuzziness. You do
• 2:04:18
  Speaker 1: not need to understand the universe to live in it.
• 2:04:21
  Speaker 1: You do not need to know how the engine works
• 2:04:24
  Speaker 1: to drive the car. You are the passenger tonight. The
• 2:04:29
  Speaker 1: laws of physics are driving. The Pauli exclusion principle is
• 2:04:34
  Speaker 1: holding you up. The Higgs field is holding you down.
• 2:04:38
  Speaker 1: The thermal vibrations are keeping you warm. The quantum tunneling
• 2:04:43
  Speaker 1: is keeping your chemistry flowing. You are being taken care
• 2:04:48
  Speaker 1: of by the machinery of the cosmos. It is a silent, automated, uncaring,
• 2:04:54
  Speaker 1: yet perfectly reliable machine. It doesn't know your name, but
• 2:04:59
  Speaker 1: it knows exactly how to bind your atoms together. Trust it.
• 2:05:04
  Speaker 1: Feel the darkness pressing against your eyelids. That is not
• 2:05:10
  Speaker 1: just absence of light. That is the universe waiting for
• 2:05:15
  Speaker 1: you to join the superposition. When you sleep, You become
• 2:05:21
  Speaker 1: a wave again. You spread out. You touch the edges
• 2:05:27
  Speaker 1: of the possible. So let the focus soften. Let the
• 2:05:32
  Speaker 1: words I am saying lose their meaning. Let them become
• 2:05:37
  Speaker 1: just sound, just vibration, just waves in the air, phonons,
• 2:05:45
  Speaker 1: sound particles hitting the drum of your ear Turning into
• 2:05:49
  Speaker 1: electrical signals. Fading into the neural web. Fading. Fading. The
• 2:05:56
  Speaker 1: cooling fan is the only thing left. The white noise
• 2:06:02
  Speaker 1: of the server rack. A steady, constant, flat line of sound.
• 2:06:08
  Speaker 1: It masks the ticking of the time crystal. It masks
• 2:06:12
  Speaker 1: the hum of the vacuum. It is the lullaby of
• 2:06:16
  Speaker 1: the laboratory. We are just atoms studying atoms. We are
• 2:06:22
  Speaker 1: just the universe trying to understand itself and getting tired
• 2:06:29
  Speaker 1: in the process. There is no shame in the fatigue.
• 2:06:33
  Speaker 1: Even the stars run out of fuel. Even the black
• 2:06:37
  Speaker 1: holes evaporate. Even the protons might eventually decay. Eons from now,
• 2:06:44
  Speaker 1: rest is the destiny of all things. Entropy wins in
• 2:06:50
  Speaker 1: the end. The disorder increases. The energy spreads out. The
• 2:06:55
  Speaker 1: heat cools. And that is okay. Because entropy is also relaxation.
• 2:07:03
  Speaker 1: Order is stress. Maintaining a neat room takes energy. Maintaining
• 2:07:09
  Speaker 1: a focused mind takes energy. Entropy is letting go. It
• 2:07:15
  Speaker 1: is letting the room go. Get messy. It is letting
• 2:07:20
  Speaker 1: the thoughts scatter. Embrace the entropy. Let your mind become
• 2:07:26
  Speaker 1: a high entropy state. Disordered. Random. Calm. Drifting. You are
• 2:07:34
  Speaker 1: safe in the Midnight Lab. The sleepless scientist will keep watch.
• 2:07:41
  Speaker 1: I will watch the dials. I will monitor the wave functions.
• 2:07:47
  Speaker 1: I will keep an eye on the cat. You can
• 2:07:49
  Speaker 1: stop observing now. You can stop collapsing the world. Let
• 2:07:54
  Speaker 1: it be a blur. Let it be quiet. But the
• 2:08:00
  Speaker 1: quiet is deceptive. In the Midnight Lab, silence is not
• 2:08:05
  Speaker 1: a lack of activity. It is simply a lack of witnesses.
• 2:08:10
  Speaker 1: While your ears detect nothing but the fan, the universe
• 2:08:14
  Speaker 1: is busy balancing its books and in a way that
• 2:08:17
  Speaker 1: is profoundly uncomfortable if you think about it too hard. So,
• 2:08:23
  Speaker 1: let us think about it too hard. Lift your hand
• 2:08:27
  Speaker 1: in the darkness. You cannot see it, but you know
• 2:08:31
  Speaker 1: it is there. You have a left hand and you
• 2:08:35
  Speaker 1: have a right hand. They look identical. If you hold
• 2:08:40
  Speaker 1: them up to a mirror, the left becomes the right
• 2:08:44
  Speaker 1: and the right becomes the left. For centuries, physicists believed
• 2:08:49
  Speaker 1: the universe treated left and right exactly the same. They
• 2:08:54
  Speaker 1: believed in parity conservation. They thought that if you built
• 2:08:58
  Speaker 1: a machine that was a mirror image of our world,
• 2:09:02
  Speaker 1: it would work exactly the same way. It was a
• 2:09:05
  Speaker 1: comforting thought. It meant the universe was balanced. It meant
• 2:09:11
  Speaker 1: nature didn't play favorites. But in 1956, the universe revealed
• 2:09:18
  Speaker 1: that it is, in fact, crooked. A physicist named Qianxiang Wu,
• 2:09:25
  Speaker 1: known as the first lady of physics, set up an
• 2:09:27
  Speaker 1: experiment with cobalt 60 atoms. She cooled them down, much
• 2:09:32
  Speaker 1: like we have cooled down our imagination tonight, to near
• 2:09:35
  Speaker 1: absolute zero, so the thermal jitter wouldn't mess up the data.
• 2:09:40
  Speaker 1: she applied a magnetic field to line up the nuclei
• 2:09:44
  Speaker 1: like little spinning tops. If the universe was symmetrical, the
• 2:09:49
  Speaker 1: electrons shooting out of these decaying atoms should have gone
• 2:09:53
  Speaker 1: up and down in equal numbers, but they didn't. They
• 2:09:58
  Speaker 1: overwhelmingly shot out in one direction. It was a shock
• 2:10:03
  Speaker 1: to the system. It meant that on a fundamental level,
• 2:10:06
  Speaker 1: the weak nuclear force the force responsible for the radiation
• 2:10:11
  Speaker 1: that powers the sun, is left-handed. The universe has a preference.
• 2:10:17
  Speaker 1: It is asymmetrical. If you were to communicate with an
• 2:10:22
  Speaker 1: alien civilization on a distant planet and you described to
• 2:10:26
  Speaker 1: them exactly how to build a car or a sandwich
• 2:10:31
  Speaker 1: or a clock, they could build it perfectly. But without
• 2:10:35
  Speaker 1: seeing you, they would never know if they built a
• 2:10:39
  Speaker 1: left-handed clock or a right-handed clock. Until Madame Wu's experiment.
• 2:10:46
  Speaker 1: Now we can tell them to look at the decay
• 2:10:49
  Speaker 1: of Cobalt-60. This shattered the idea of a perfect mirror
• 2:10:55
  Speaker 1: image perfection. It suggests that reality itself has a twist,
• 2:11:01
  Speaker 1: a quirk, a built-in bias. So as you lie there,
• 2:11:06
  Speaker 1: consider that you are living in a left-handed universe. You
• 2:11:10
  Speaker 1: are part of a reality that is fundamentally slightly lopsided.
• 2:11:15
  Speaker 1: And perhaps that is why you toss and turn. You
• 2:11:18
  Speaker 1: are trying to find the comfortable groove in a mattress
• 2:11:22
  Speaker 1: that was designed by a crooked architect. But the mirror
• 2:11:26
  Speaker 1: image problem gets worse. It is not just about left
• 2:11:30
  Speaker 1: and right. It is about the substance of creation itself.
• 2:11:34
  Speaker 1: Let us talk about the evil twin of matter. Antimatter.
• 2:11:41
  Speaker 1: In 1928, Paul Dirac was playing with equations. He was
• 2:11:45
  Speaker 1: trying to combine quantum mechanics with Einstein's special relativity. He
• 2:11:51
  Speaker 1: came up with an equation that worked beautifully, but it
• 2:11:54
  Speaker 1: had a strange quirk. It allowed for particles with negative energy.
• 2:12:00
  Speaker 1: Most people would have thrown the equation out. Negative energy
• 2:12:05
  Speaker 1: sounds like a bank account error. It shouldn't exist. But
• 2:12:10
  Speaker 1: Dirac was bold. He suggested that for every particle of matter,
• 2:12:16
  Speaker 1: there is a corresponding particle of antimatter. Same mass, but
• 2:12:21
  Speaker 1: opposite electric charge. Four years later, he was proven right.
• 2:12:26
  Speaker 1: We found the positron, the anti-electron. Here is the terrifying part.
• 2:12:35
  Speaker 1: When matter meets antimatter, they do not bounce off each other.
• 2:12:41
  Speaker 1: They do not bond. They annihilate. They completely destroy each other,
• 2:12:46
  Speaker 1: converting 100% of their mass into pure energy, pure gamma radiation.
• 2:12:54
  Speaker 1: It is the most violent reaction known to physics. A
• 2:12:58
  Speaker 1: paperclip of antimatter reacting with a paperclip of matter would
• 2:13:02
  Speaker 1: release the energy of a small nuclear bomb. Now, look
• 2:13:08
  Speaker 1: at the room around you, the bed, the walls, the air.
• 2:13:13
  Speaker 1: It is all made of matter. Where is the antimatter?
• 2:13:19
  Speaker 1: According to the Big Bang theory, the universe should have
• 2:13:23
  Speaker 1: been created with equal amounts of matter and antimatter. 50-50,
• 2:13:28
  Speaker 1: perfect balance. But if that had happened, all the matter
• 2:13:34
  Speaker 1: and all the antimatter would have mixed together in the
• 2:13:37
  Speaker 1: first fraction of a second. They would have annihilated. The
• 2:13:41
  Speaker 1: universe would have ended before it began. It would be
• 2:13:45
  Speaker 1: nothing but a bath of pure light. No stars. No atoms.
• 2:13:51
  Speaker 1: No you. But that didn't happen. Somehow, in those first
• 2:13:56
  Speaker 1: chaotic moments, there was a Slight imbalance. For every billion
• 2:14:01
  Speaker 1: particles of antimatter, there were a billion and one particles
• 2:14:06
  Speaker 1: of matter. A billion pairs annihilated. Boom. They turned into
• 2:14:13
  Speaker 1: the background radiation we can still detect today. But that
• 2:14:17
  Speaker 1: one single survivor? That one lonely particle of matter left over?
• 2:14:23
  Speaker 1: That is what you are made of. You are the
• 2:14:27
  Speaker 1: leftover dust. You are the rounding error. You are the
• 2:14:32
  Speaker 1: cosmic debris that remained after the Great War of Annihilation.
• 2:14:39
  Speaker 1: Every star in the sky, every galaxy, every planet, and
• 2:14:44
  Speaker 1: every cell in your body is made of the tiny
• 2:14:48
  Speaker 1: fraction of material that failed to find a partner to
• 2:14:52
  Speaker 1: destroy it. We are you. The anomaly. The universe is
• 2:14:58
  Speaker 1: mostly empty space and radiation. Matter is the exception. Existence
• 2:15:05
  Speaker 1: is a statistical fluke. Does that make you feel small?
• 2:15:09
  Speaker 1: Or does it make you feel lucky? You are the
• 2:15:13
  Speaker 1: one in a billion that made it out of the fire.
• 2:15:17
  Speaker 1: You are the survivor. And you are still surviving. Right now,
• 2:15:23
  Speaker 1: there is antimatter in your room. Bananas are rich in potassium.
• 2:15:30
  Speaker 1: A tiny fraction of that potassium is a radioactive isotope,
• 2:15:34
  Speaker 1: potassium 40. Every 75 minutes or so, a banana will
• 2:15:40
  Speaker 1: spit out a positron, an antimatter particle. If you have
• 2:15:45
  Speaker 1: a fruit bowl in your kitchen, it is a tiny
• 2:15:48
  Speaker 1: antimatter generator. The positron flies out, hits an electron in
• 2:15:54
  Speaker 1: the air molecules, and annihilates in a tiny invisible flash
• 2:15:59
  Speaker 1: of gamma rays. It is happening constantly. A microscopic war
• 2:16:06
  Speaker 1: of opposites fought in the fruit bowl while you sleep.
• 2:16:11
  Speaker 1: But do not worry. The amount is small. You are
• 2:16:15
  Speaker 1: not going to explode. The universe has biased the game
• 2:16:20
  Speaker 1: in your favor. Matter one. The dangerous twins have been
• 2:16:25
  Speaker 1: banished to the edges of the galaxy or the centers
• 2:16:29
  Speaker 1: of high energy experiments. But what if the ground beneath
• 2:16:33
  Speaker 1: your feet was not as stable as you thought? I
• 2:16:37
  Speaker 1: do not mean the floorboards. I mean the laws of
• 2:16:43
  Speaker 1: physics themselves. We have spoken about the vacuum state, the
• 2:16:50
  Speaker 1: lowest energy state. a ball rolling down a hill will
• 2:16:54
  Speaker 1: stop at the bottom. That is the vacuum, the ground floor.
• 2:17:00
  Speaker 1: But what if we are not at the bottom of
• 2:17:02
  Speaker 1: the hill? What if we are resting on a ledge?
• 2:17:06
  Speaker 1: This is the theory of the false vacuum. Imagine a
• 2:17:11
  Speaker 1: hiker standing on a ledge halfway down a mountain. He
• 2:17:15
  Speaker 1: looks down and sees the valley floor far below. He
• 2:17:19
  Speaker 1: is stable on the ledge, but he is not at
• 2:17:22
  Speaker 1: the lowest point. Physicists suspect that the Higgs field, the
• 2:17:27
  Speaker 1: molasses that gives you mass, might be stuck on a ledge.
• 2:17:32
  Speaker 1: It might be in a metastable state. It looks stable.
• 2:17:38
  Speaker 1: It has been stable for 13.8 billion years, but it
• 2:17:43
  Speaker 1: is not the true bottom. There is a theory that
• 2:17:47
  Speaker 1: at any moment through a random quantum tunneling event, a
• 2:17:52
  Speaker 1: tiny point of the universe could realize, hey, I can
• 2:17:56
  Speaker 1: go lower. It would tunnel through the ledge and drop
• 2:18:01
  Speaker 1: to the true vacuum. If this happens, it releases energy.
• 2:18:06
  Speaker 1: A bubble of true vacuum would form. Inside this bubble,
• 2:18:10
  Speaker 1: the laws of physics would be different. The constants of
• 2:18:14
  Speaker 1: nature would change. Chemistry would not work. Atoms would not
• 2:18:21
  Speaker 1: hold together. And this bubble would expand. It would grow
• 2:18:26
  Speaker 1: at the speed of light. Because it moves at the
• 2:18:29
  Speaker 1: speed of light, you would never see it coming. Information
• 2:18:33
  Speaker 1: cannot travel faster than light. So... The warning signal would
• 2:18:38
  Speaker 1: arrive at the exact same moment as the destruction. One moment,
• 2:18:44
  Speaker 1: you are lying in bed, listening to the hum of
• 2:18:48
  Speaker 1: the fan. The next moment, you are simply deleted. Your
• 2:18:54
  Speaker 1: atoms would fall apart. The forces holding you together would
• 2:18:59
  Speaker 1: rewrite themselves into something unrecognizable. It would be the ultimate destruction.
• 2:19:05
  Speaker 1: painless instant end. A cosmic off-switch, it sounds terrifying. A
• 2:19:13
  Speaker 1: bubble of doom sweeping through the galaxy, erasing history. But
• 2:19:19
  Speaker 1: in the context of sleep, it is strangely calming. It
• 2:19:24
  Speaker 1: takes the responsibility out of your hands. There is absolutely
• 2:19:29
  Speaker 1: nothing you can do about vacuum decay. You cannot prepare
• 2:19:34
  Speaker 1: for it. You cannot dodge it. You cannot insure against it.
• 2:19:39
  Speaker 1: It is a sword of Damocles that hangs over the
• 2:19:42
  Speaker 1: entire universe. Not just you, and if the universe can
• 2:19:47
  Speaker 1: sleep under that threat, so can you. The probability is
• 2:19:52
  Speaker 1: infinitesimally low. It might not happen for googles of years,
• 2:19:57
  Speaker 1: Or it might have happened a billion light years away
• 2:20:01
  Speaker 1: five minutes ago. And the bubble is rushing towards us
• 2:20:05
  Speaker 1: right now. But let's be sardonic about it. If the
• 2:20:09
  Speaker 1: laws of physics are going to be rewritten, maybe the
• 2:20:13
  Speaker 1: new ones will be better. Maybe in the new universe,
• 2:20:17
  Speaker 1: coffee doesn't get cold and printer ink is free. Until then,
• 2:20:23
  Speaker 1: we live on the ledge. We build our houses on
• 2:20:28
  Speaker 1: the cliffside of energy potentials, and we enjoy the view.
• 2:20:33
  Speaker 1: And what a view it is. Let's look deeper into
• 2:20:38
  Speaker 1: the weird zoo of particles. We have talked about the
• 2:20:42
  Speaker 1: common ones, the protons, electrons, neutrons, the vanilla ice cream
• 2:20:50
  Speaker 1: of reality. But there are other flavors, quarks, Protons and
• 2:20:57
  Speaker 1: neutrons are made of quarks. Specifically, up quarks and down quarks.
• 2:21:04
  Speaker 1: A proton is two ups and a down. A neutron
• 2:21:09
  Speaker 1: is two downs and an up. Everything you have ever
• 2:21:13
  Speaker 1: touched is made of these two types. But there are
• 2:21:17
  Speaker 1: four other types of quarks. Charm. Strange. Top. Bottom. Physicists.
• 2:21:25
  Speaker 1: are terrible at naming things, but they are great at
• 2:21:28
  Speaker 1: finding nightmares. Let's talk about strange quarks. They are heavier
• 2:21:34
  Speaker 1: than the regular ones. They usually decay very quickly. But
• 2:21:40
  Speaker 1: there is a hypothesis called the strange matter hypothesis. It
• 2:21:45
  Speaker 1: suggests that inside the crushing pressure of a neutron star,
• 2:21:50
  Speaker 1: a dead star that is incredibly dense, The protons and
• 2:21:54
  Speaker 1: neutrons might break down. The quarks might spill out and
• 2:22:00
  Speaker 1: mix together. Under this pressure, some of the quarks might
• 2:22:04
  Speaker 1: turn into strange quarks. The result is strange matter. A
• 2:22:09
  Speaker 1: soup of up, down, and strange quarks. And here is
• 2:22:15
  Speaker 1: the kicker. Strange matter might be the true ground state
• 2:22:20
  Speaker 1: of matter. it might be more stable than the atoms
• 2:22:24
  Speaker 1: you are made of. This leads to the concept of
• 2:22:27
  Speaker 1: a strangelet, a tiny nugget of strange matter. If a
• 2:22:32
  Speaker 1: strangelet were to escape a neutron star and drift through space,
• 2:22:37
  Speaker 1: perhaps carried by that dark matter wind we talked about,
• 2:22:41
  Speaker 1: and it were to hit Earth, it would not just
• 2:22:44
  Speaker 1: punch a hole. Because strange matter is more stable, any
• 2:22:49
  Speaker 1: normal matter that touches it would want to become strange matter.
• 2:22:54
  Speaker 1: It would lower its energy by converting. So, the Strangelet
• 2:23:00
  Speaker 1: would touch an atom of Earth. That atom would dissolve
• 2:23:05
  Speaker 1: and turn into strange matter. This releases energy and heat
• 2:23:12
  Speaker 1: and touches the next atom. It would start a chain reaction,
• 2:23:18
  Speaker 1: a contagion of physics. The strangelet would fall to the
• 2:23:22
  Speaker 1: center of the Earth, eating everything in its path, converting
• 2:23:26
  Speaker 1: the rock and the iron into strange sludge. Eventually, the
• 2:23:31
  Speaker 1: entire Earth would be converted into a hot, dense ball
• 2:23:36
  Speaker 1: of strange matter, the size of a baseball stadium, but
• 2:23:41
  Speaker 1: with the mass of the entire planet. Congratulations, the sleepless
• 2:23:46
  Speaker 1: scientist whispers. You are now a quark nugget. But again,
• 2:23:53
  Speaker 1: the probabilities are on your side. We have been hit
• 2:23:56
  Speaker 1: by cosmic rays for billions of years and we are
• 2:24:00
  Speaker 1: still here. We are still made of boring, unstable, up
• 2:24:06
  Speaker 1: and down quarks. It seems the universe prefers variety over stability.
• 2:24:14
  Speaker 1: It prefers the complex, fragile dance of atoms to the dense,
• 2:24:19
  Speaker 1: boring sludge of strange matter. So, appreciate your fragility. Your
• 2:24:25
  Speaker 1: body is a delicate, unstable arrangement of chemistry that is
• 2:24:30
  Speaker 1: fighting against the urge to collapse into a lower energy state.
• 2:24:34
  Speaker 1: You are fighting the gravity, the vacuum decay, and the strangelets,
• 2:24:40
  Speaker 1: and you are winning. Every breath you take is a
• 2:24:44
  Speaker 1: victory lap. Inhale, exhale. That was a victory. Now, let
• 2:24:52
  Speaker 1: us shift gears. We have looked at the things that
• 2:24:56
  Speaker 1: could destroy us. Let us look at the things that
• 2:25:00
  Speaker 1: might explain why we are here at all. The Goldilocks Enigma.
• 2:25:07
  Speaker 1: The universe seems suspiciously perfect for life. If the force
• 2:25:12
  Speaker 1: of gravity were slightly stronger, stars would burn through their
• 2:25:16
  Speaker 1: fuel in a million years. Too fast for evolution, we
• 2:25:22
  Speaker 1: wouldn't be here. If gravity were slightly weaker, stars would
• 2:25:27
  Speaker 1: never ignite. No suns, no heat, we wouldn't be here.
• 2:25:34
  Speaker 1: If the strong nuclear force were slightly different, carbon wouldn't form.
• 2:25:39
  Speaker 1: No biology, we wouldn't be here. If the expansion rate
• 2:25:44
  Speaker 1: of the universe were slightly faster, galaxies wouldn't form. If
• 2:25:49
  Speaker 1: it were slower, the universe would have collapsed back into
• 2:25:53
  Speaker 1: a big crunch eons ago. It feels like someone adjusted
• 2:25:58
  Speaker 1: the dials on the mixing board of reality to get
• 2:26:01
  Speaker 1: the sound exactly right. This is the fine-tuning problem. Why
• 2:26:08
  Speaker 1: are the constants of nature just right? There are two
• 2:26:13
  Speaker 1: main answers. One is religious which is not our department.
• 2:26:19
  Speaker 1: The other is statistical, which is very much our department.
• 2:26:24
  Speaker 1: It is the anthropic principle. It states, we observe these
• 2:26:29
  Speaker 1: conditions because if they were any different, we wouldn't be
• 2:26:33
  Speaker 1: here to observe them. It is a tautology. It is
• 2:26:37
  Speaker 1: like a puddle of water waking up and saying, wow,
• 2:26:42
  Speaker 1: this hole in the ground fits me perfectly. It must
• 2:26:46
  Speaker 1: have been made just for me. No, the puddle fits
• 2:26:51
  Speaker 1: the hole because the water flows to fill the shape.
• 2:26:55
  Speaker 1: In the context of the multiverse, the library of many
• 2:26:59
  Speaker 1: worlds we visited earlier, it makes sense. Imagine there are
• 2:27:06
  Speaker 1: infinite universes, and most of them, gravity is too strong. Crunch.
• 2:27:15
  Speaker 1: dead universe. In others, the weak force is too weak.
• 2:27:21
  Speaker 1: No stars, dark universe. There are trillions of dead, empty,
• 2:27:26
  Speaker 1: broken universes filling the shelves of the library. But in
• 2:27:31
  Speaker 1: a few of them, rare, precious jewels, the numbers align.
• 2:27:37
  Speaker 1: The stars ignite. Carbon forms. Complexity arises. And eventually, a
• 2:27:45
  Speaker 1: sleepless primate evolves to wonder about it. You are here
• 2:27:50
  Speaker 1: because you couldn't be anywhere else. You are the winner.
• 2:27:55
  Speaker 1: of a cosmic lottery you didn't know you entered. But
• 2:27:59
  Speaker 1: this leads to a stranger thought. A thought that might
• 2:28:03
  Speaker 1: keep you awake, or might make you immortal. Quantum immortality.
• 2:28:10
  Speaker 1: We talked about the many worlds theory. Every time a
• 2:28:14
  Speaker 1: quantum event happens, the universe splits. Now, Imagine a version
• 2:28:20
  Speaker 1: of Schrodinger's cat experiment, but with a human observer inside
• 2:28:26
  Speaker 1: the box. Let's call him Bob. Bob gets in the box.
• 2:28:31
  Speaker 1: The probability of the poison releasing is 50-50. In 50%
• 2:28:37
  Speaker 1: of the universes, Bob dies. In 50% of the universes,
• 2:28:42
  Speaker 1: Bob lives. From the outside perspective, we see Bob die
• 2:28:47
  Speaker 1: half the time, But from Bob's perspective, Bob cannot experience
• 2:28:53
  Speaker 1: a universe where he is dead. Consciousness requires existence. So,
• 2:29:01
  Speaker 1: from Bob's point of view, he always wakes up in
• 2:29:04
  Speaker 1: the branch with a poison didn't fire. He runs the
• 2:29:09
  Speaker 1: experiment again. 50-50. Again, half the versions of Bob die.
• 2:29:16
  Speaker 1: But the consciousness of Bob... The I am can only
• 2:29:21
  Speaker 1: continue in the timeline where he survives. So to Bob,
• 2:29:25
  Speaker 1: it seems miraculous. The gun jams. The poison fails. The
• 2:29:34
  Speaker 1: hammer breaks over and over again. In the multiverse, there
• 2:29:40
  Speaker 1: is always a branch, no matter how thin, where you survive.
• 2:29:45
  Speaker 1: If this logic holds, And it is a controversial if.
• 2:29:50
  Speaker 1: It suggests that you might never experience your own death.
• 2:29:53
  Speaker 1: You might get old. You might get sick. But in
• 2:29:58
  Speaker 1: the sliver of probability where your consciousness can persist, it does.
• 2:30:03
  Speaker 1: You are surfing the edge of the wave of survival.
• 2:30:08
  Speaker 1: It is a lonely kind of immortality. Everyone else around
• 2:30:12
  Speaker 1: you might see you pass away in their timelines. But
• 2:30:16
  Speaker 1: in your timeline, you just keep going. The sleepless scientist
• 2:30:22
  Speaker 1: keeps broadcasting. The fam keeps humming. It suggests that consciousness
• 2:30:28
  Speaker 1: is a persistent illusion that refuses to leave the stage. So,
• 2:30:34
  Speaker 1: why worry about the end? According to the math of
• 2:30:38
  Speaker 1: the many worlds, you might just be the one observer
• 2:30:42
  Speaker 1: who never blinks. But Let's step back from the edge
• 2:30:47
  Speaker 1: of eternity. That is too much pressure for a Tuesday night.
• 2:30:53
  Speaker 1: Let's look at something that breaks the rules of cause
• 2:30:56
  Speaker 1: and effect. We assume that the past causes the future.
• 2:31:01
  Speaker 1: You knock a glass over, it breaks. The knock caused
• 2:31:06
  Speaker 1: the break. But in the quantum world, the arrow can
• 2:31:11
  Speaker 1: point both ways. We talked about the delayed choice eraser.
• 2:31:15
  Speaker 1: But let's scale it up. John Wheeler, a giant of physics,
• 2:31:20
  Speaker 1: proposed a cosmic delayed choice. Imagine a quasar, a super
• 2:31:26
  Speaker 1: bright galaxy, billions of light years away. Its light travels
• 2:31:31
  Speaker 1: towards Earth. Between Earth and the quasar is a massive galaxy.
• 2:31:37
  Speaker 1: Its gravity acts like a lens, bending the light. The
• 2:31:42
  Speaker 1: light can go around the left side of the galaxy
• 2:31:45
  Speaker 1: or the right side. Billions of years ago, the photons
• 2:31:49
  Speaker 1: left the quasar. They traveled through the void. They passed
• 2:31:54
  Speaker 1: the galaxy. Now, today, on Earth, an astronomer points a
• 2:32:00
  Speaker 1: telescope at the quasar. He can choose to measure which
• 2:32:04
  Speaker 1: path the light took, left or right, or he can
• 2:32:08
  Speaker 1: choose to measure the interference patterns. wave behavior. Just like
• 2:32:13
  Speaker 1: in the double slit experiment, his choice determines whether the
• 2:32:16
  Speaker 1: light acted like a particle or a wave. But here
• 2:32:21
  Speaker 1: is the twist. The light passed the galaxy billions of
• 2:32:25
  Speaker 1: years ago. The choice the astronomer makes tonight determines the
• 2:32:29
  Speaker 1: path the photon took billions of years ago. Did the
• 2:32:33
  Speaker 1: photon go left? Did it go right? Did it go
• 2:32:36
  Speaker 1: both ways? The answer depends on what you decide to
• 2:32:40
  Speaker 1: do with your telescope right now. This suggests that our
• 2:32:44
  Speaker 1: actions in the present are reaching back through deep time
• 2:32:48
  Speaker 1: and knitting the fabric of the past. We are not
• 2:32:51
  Speaker 1: just passive observers of history. We are, in a quantum sense,
• 2:32:57
  Speaker 1: the authors of it. The stars you see out your window,
• 2:33:02
  Speaker 1: your observation of them is finalizing their journey. You are
• 2:33:06
  Speaker 1: collapsing their wave functions after a million-year voyage. You are
• 2:33:12
  Speaker 1: the destination they have been waiting for. Without your eye
• 2:33:16
  Speaker 1: to catch the photon, its history remains a blur. With
• 2:33:21
  Speaker 1: your eye, it becomes a story. So, look at the
• 2:33:26
  Speaker 1: night sky, or imagine it. You are completing the universe.
• 2:33:32
  Speaker 1: You are tying up the loose ends of light that
• 2:33:35
  Speaker 1: have been unraveling since the dawn of time. It is
• 2:33:39
  Speaker 1: a heavy responsibility, but also a beautiful one. You are
• 2:33:44
  Speaker 1: the witness that makes the universe real. But what if
• 2:33:49
  Speaker 1: the particles themselves don't want to be real? What if
• 2:33:54
  Speaker 1: they want to be fast, faster than light? We have
• 2:33:59
  Speaker 1: all heard the speed limit. 299,792,458 meters per second. The
• 2:34:10
  Speaker 1: speed of light. Nothing can go faster. But the equations
• 2:34:16
  Speaker 1: of relativity have a loophole. They say you cannot accelerate
• 2:34:21
  Speaker 1: to the speed of light. You would need infinite energy.
• 2:34:26
  Speaker 1: But what if a particle was born faster than light?
• 2:34:29
  Speaker 1: What if it never had to accelerate because that was
• 2:34:32
  Speaker 1: its starting speed? These hypothetical particles are called tachyons. To
• 2:34:37
  Speaker 1: a tachyon, the speed of light is the slow limit.
• 2:34:42
  Speaker 1: It can never slow down to light speed. It requires
• 2:34:46
  Speaker 1: infinite energy to slow down. So it zooms through the universe,
• 2:34:50
  Speaker 1: always faster than light. And because it moves faster than light,
• 2:34:55
  Speaker 1: it moves backwards in time. If you could build a
• 2:34:58
  Speaker 1: telephone using tachyons, you could call yourself five minutes ago.
• 2:35:03
  Speaker 1: You could warn yourself not to drink that second cup
• 2:35:06
  Speaker 1: of coffee. But then, if you didn't drink the coffee,
• 2:35:10
  Speaker 1: you wouldn't have called yourself. Paradox. Tachyons create causal loops
• 2:35:17
  Speaker 1: that give physicists migraines. Most scientists think they don't exist.
• 2:35:24
  Speaker 1: They are too messy. But the math allows them. Imagine
• 2:35:30
  Speaker 1: a universe filled with invisible particles rushing backwards through time,
• 2:35:35
  Speaker 1: carrying messages from a future that hasn't happened yet, trying
• 2:35:40
  Speaker 1: to rewrite a past that is already fading. Maybe that
• 2:35:45
  Speaker 1: is what déjà vu is, a tachyon hitting your brain,
• 2:35:48
  Speaker 1: a glitch in the temporary processing, a memory of something
• 2:35:53
  Speaker 1: that is about to happen. Or maybe It is just
• 2:35:58
  Speaker 1: a misfiring neuron. But the tachyon version is more poetic.
• 2:36:04
  Speaker 1: For a sleepless night, the laboratory is full now. We
• 2:36:08
  Speaker 1: have filled it with mirrors and antimatter bananas and bubbles
• 2:36:14
  Speaker 1: of doom and backwards flying time particles. It is a
• 2:36:19
  Speaker 1: cluttered room. But look at the dust motes dancing in
• 2:36:23
  Speaker 1: the light of the server LEDs. Brownian motion. In 1827,
• 2:36:29
  Speaker 1: a botanist named Robert Brown looked at pollen grains in water.
• 2:36:35
  Speaker 1: They were jittering, dancing. He didn't know why. He thought
• 2:36:41
  Speaker 1: they might be alive. It took Einstein, again, to explain it.
• 2:36:47
  Speaker 1: The pollen was being hit by invisible water molecules. The
• 2:36:51
  Speaker 1: visible was being moved by the invisible. That is the
• 2:36:56
  Speaker 1: theme of our night. You are the pollen grain. The
• 2:37:00
  Speaker 1: world you see, the job, the bills, the traffic is
• 2:37:05
  Speaker 1: the pollen. But the reason it moves, the reason it jitters,
• 2:37:10
  Speaker 1: is the invisible sea of quantum mechanics underneath. You are
• 2:37:14
  Speaker 1: being buffeted by forces you cannot see. And just like
• 2:37:18
  Speaker 1: the pollen grain, you don't have to steer. You don't
• 2:37:22
  Speaker 1: have to understand the hydrodynamics of the water molecules. You
• 2:37:27
  Speaker 1: just have to float. The jitter is mental. The shaking
• 2:37:32
  Speaker 1: is part of the system. If you feel anxious, if
• 2:37:35
  Speaker 1: you feel the vibration of the world, know that it
• 2:37:38
  Speaker 1: is just the thermal noise of the universe. It is
• 2:37:42
  Speaker 1: not a malfunction. It is a feature. Even the black
• 2:37:46
  Speaker 1: holes shiver. Even the vacuum boils. Stillness is the only
• 2:37:53
  Speaker 1: unnatural state. And yet, we seek it. We crave the zero.
• 2:38:00
  Speaker 1: We want to be the superfluid that flows without friction.
• 2:38:03
  Speaker 1: We want to be the Bose-Einstein condensate that sleeps in
• 2:38:07
  Speaker 1: a single pile. We are fighting our own biology, which
• 2:38:12
  Speaker 1: is warm and messy and loud. But the fight... is
• 2:38:17
  Speaker 1: what makes us interesting. If we were perfectly still, we
• 2:38:22
  Speaker 1: would be frozen. If we were perfectly symmetrical, we would
• 2:38:26
  Speaker 1: be boring. If we were perfectly stable, we wouldn't exist.
• 2:38:31
  Speaker 1: We are the beautiful, asymmetrical, unstable, left-handed, oscillating errors of
• 2:38:37
  Speaker 1: a universe that loves to experiment. And the experiment is
• 2:38:42
  Speaker 1: currently in sleep mode. Or it should be. The fan
• 2:38:47
  Speaker 1: is still spinning. The bearings are frictionless enough to keep
• 2:38:51
  Speaker 1: it quiet, but not frictionless enough to spin forever. It
• 2:38:56
  Speaker 1: needs power. You need power. Recharging is a quantum process too.
• 2:39:05
  Speaker 1: Your mitochondria are moving electrons down a chain, pumping protons
• 2:39:10
  Speaker 1: across a membrane. creating the chemical battery packets, ATP, that
• 2:39:16
  Speaker 1: will power you tomorrow. It is a microscopic hydroelectric dam
• 2:39:21
  Speaker 1: inside your cells. While you lie there doing nothing, your
• 2:39:26
  Speaker 1: body is generating kilowatts of potential. You are a power
• 2:39:31
  Speaker 1: plant in standby mode, so do not feel guilty for
• 2:39:35
  Speaker 1: the rest. You are not inactive. You are refining fuel.
• 2:39:41
  Speaker 1: You are resetting the qubits. You are preparing for the
• 2:39:45
  Speaker 1: next collapse of the wave function. Tomorrow, you will open
• 2:39:50
  Speaker 1: your eyes and the universe will snap back into focus.
• 2:39:56
  Speaker 1: The blurry map will sharpen. The cat will be alive.
• 2:40:00
  Speaker 1: The coffee will be hot, but for now, keep the
• 2:40:04
  Speaker 1: map blurry. Keep the cat in the box. Let the
• 2:40:09
  Speaker 1: paradoxes protect you. Logic is a daytime tool. It is
• 2:40:14
  Speaker 1: a hammer for building things in the sun. But at night,
• 2:40:19
  Speaker 1: you don't need a hammer. You need a blanket. And
• 2:40:24
  Speaker 1: quantum mechanics, with its fuzziness and its uncertainty, is the
• 2:40:29
  Speaker 1: ultimate blanket. It covers everything. It softens the edges of
• 2:40:36
  Speaker 1: the sharp reality. It tells you that Exactness is an illusion. So,
• 2:40:44
  Speaker 1: wrap yourself in the uncertainty. Pull the probability cloud up
• 2:40:49
  Speaker 1: to your chin. Sink into the foam. The sleepless scientist
• 2:40:55
  Speaker 1: is checking the final monitors. The tachyon detectors are silent.
• 2:41:00
  Speaker 1: The antimatter containment is holding. The false vacuum is stable.
• 2:41:06
  Speaker 1: The experiment is concluding. The data has been collected. The
• 2:41:11
  Speaker 1: conclusion is simple. The universe is weird, but it is
• 2:41:16
  Speaker 1: waiting for you to wake up to keep the story going.
• 2:41:19
  Speaker 1: But it can wait a few more hours. The stars
• 2:41:23
  Speaker 1: aren't going anywhere. The protons have a half-life of 10
• 2:41:27
  Speaker 1: to the power of 34 years. They will be there
• 2:41:32
  Speaker 1: when you wake up. There is no rush. Time is relative.
• 2:41:38
  Speaker 1: Make your night last a billion years.