Latest / The Quark Side - Quantum Physics Podcast / Is Your Sense of Self an Illusion?
Transcript
- 0:01Speaker 1: Welcome to the Thinking of this podcast, a philosophical journey
- 0:04Speaker 1: through consciousness, reality, and the phenomena that challenge our understanding
- 0:08Speaker 1: of existence. From ancient wisdom to cutting edge theories, we
- 0:12Speaker 1: explore where philosophy meets science and curiosity leads to the
- 0:15Speaker 1: edge of the unknown.
- 0:18Speaker 2: I want you to try something for a second. Just
- 0:21Speaker 2: pause whatever you're doing right now.
- 0:23Speaker 3: Yeah, if you're driving, or walking, or just sitting at
- 0:25Speaker 3: your desk, just bring your attention inward for a moment exactly.
- 0:29Speaker 2: I want you to ask yourself a disarmingly simple question.
- 0:34Speaker 2: Who is the you listening to this exact sentence right now?
- 0:38Speaker 4: It seems almost ridiculous to even ask, right, because when
- 0:41Speaker 4: you look inward, there is this overwhelming, undeniable feeling that
- 0:46Speaker 4: there is a stable, permanent self inside your mind.
- 0:49Speaker 3: Absolutely, it feels like there is a permanent observer sitting
- 0:53Speaker 3: right behind your eyes.
- 0:54Speaker 2: Yeah, like you're looking out at the world through the
- 0:56Speaker 2: windshield of your face, and that observer that you is
- 0:59Speaker 2: the one making all the decisions.
- 1:01Speaker 3: It's the entity holding on to your childhood memories or
- 1:03Speaker 3: planning where you're going to.
- 1:04Speaker 2: Have for dinner later, right, the one experiencing reality from
- 1:07Speaker 2: a fixed central point of awareness. It feels so immediate
- 1:12Speaker 2: and so entirely natural that you probably have never even
- 1:16Speaker 2: thought to question it.
- 1:17Speaker 3: I mean, I know I hadn't for a long time.
- 1:19Speaker 3: It just feels like an absolute given of biology.
- 1:21Speaker 2: It really does. But today our mission is to unpack
- 1:25Speaker 2: a massive paradigm shift regarding this exact feeling. We're going
- 1:29Speaker 2: to explore how modern neuroscience, psychology, and even ancient philosophy
- 1:34Speaker 2: all converge on a deeply unsettling premise.
- 1:37Speaker 3: And that premise is, what if that feeling, that absolute
- 1:40Speaker 3: certainty of a permanent observer sitting in the command center
- 1:43Speaker 3: is fundamentally misleading?
- 1:44Speaker 1: Right?
- 1:45Speaker 2: What if the self as you intuitively understand it just
- 1:48Speaker 2: simply does not exist?
- 1:50Speaker 3: Which is a huge thing to wrap your head around.
- 1:52Speaker 3: But the mounting evidence suggests that this eye you experience
- 1:56Speaker 3: every single moment is actually continuously updated emulation.
- 2:00Speaker 2: Wait, a simulation, yeah.
- 2:02Speaker 3: A cognitive construction. It's generated millisecond by millisecond by your
- 2:06Speaker 3: neural processes for purely functional evolutionary reasons.
- 2:09Speaker 2: Okay, I need to stop you right there, because that
- 2:11Speaker 2: is a lot to take in. You're saying that the
- 2:12Speaker 2: you I feel like I am isn't a physical structure
- 2:15Speaker 2: or like an inherent essence.
- 2:17Speaker 3: Exactly, It's an active simulation produced by the brain.
- 2:20Speaker 2: Okay, to put it in a way that helps me
- 2:22Speaker 2: understand it, let's think about how we traditionally view the self.
- 2:26Speaker 2: We view it like a pilot sitting in the cockpit
- 2:28Speaker 2: of an airplane.
- 2:29Speaker 3: Right, that's the perfect analogy.
- 2:31Speaker 2: Yeah, So the pilot looks at the dials, pulls the levers,
- 2:34Speaker 2: makes the decisions, and steers the plane through the sky.
- 2:38Speaker 2: But the implication here is that if we open the
- 2:40Speaker 2: cockpit door, there is absolutely no pilot in the chair
- 2:43Speaker 2: note at all. The plane is somehow flying itself. The
- 2:46Speaker 2: dials are turning, the levers are pulling, and yet the
- 2:49Speaker 2: machinery is generating this incredibly convincing illusion for you that
- 2:53Speaker 2: you are sitting right there in the captain seat.
- 2:55Speaker 3: I love that analogy because it perfectly captures what philosopher
- 2:59Speaker 3: Daniel Dennet called the Cartesian theater fallacy.
- 3:03Speaker 2: The Cartesian theater what is that.
- 3:05Speaker 3: It's the intuitive idea that there is a little stage
- 3:08Speaker 3: inside the brain where sensory information is projected for an
- 3:13Speaker 3: inner audience of one.
- 3:15Speaker 2: Ah, Right, like a little homunculus watching a movie screen
- 3:18Speaker 2: in my head.
- 3:19Speaker 3: Precisely. Dennet coined that term to highlight how absurd our
- 3:23Speaker 3: intuition is when we actually map it onto physical anatomy,
- 3:27Speaker 3: because when we look for that pilot, when neuroscientists look
- 3:30Speaker 3: for the central commander inside the human nervous system, we
- 3:34Speaker 3: come up entirely empty handed.
- 3:35Speaker 2: So there's literally no command center.
- 3:38Speaker 3: Right, despite the overwhelming intuition of a unified me, modern
- 3:42Speaker 3: functional magnetic resonance imaging or fMRI reveals absolutely no central
- 3:47Speaker 3: point in the brain.
- 3:48Speaker 2: That is so counterintuitive, it really is.
- 3:51Speaker 3: There is no singular region, no specific cluster of neurons,
- 3:55Speaker 3: no biological microprocessor that holds your complete self.
- 3:59Speaker 2: Which feels entirely wrong on a subjective level, you know.
- 4:02Speaker 2: I mean when I sit down to eat a great meal,
- 4:03Speaker 2: listen to some music and feel happy about it, all
- 4:05Speaker 2: feels perfectly unified.
- 4:06Speaker 3: Of course it does. That's the illusion working perfectly.
- 4:08Speaker 2: But the smell of the food, the sound of the music,
- 4:11Speaker 2: the emotion of joy, they all happen to one centralized me.
- 4:15Speaker 2: How can the brain not have a central hub if
- 4:18Speaker 2: my experience is entirely centralized.
- 4:20Speaker 3: Well, the physical reality of your brain is actually a vast,
- 4:23Speaker 3: heavily distributed network of countless interacting subsystems.
- 4:26Speaker 2: Hey break that down for me, what kind of subsystems.
- 4:29Speaker 3: So you have the hippocampus and related temporal lobe structures
- 4:32Speaker 3: processing your memories. You have the amygdala and the limbic
- 4:35Speaker 3: system processing emotional valance like fear or joy.
- 4:39Speaker 2: Okay, got it, memory here, emotions there exactly.
- 4:42Speaker 3: Then you have the occipital lobe at the back of
- 4:44Speaker 3: your head handling visual perception, the auditory cortex managing sound,
- 4:49Speaker 3: and language centers generating speech.
- 4:51Speaker 2: And all of these are completely separate physical locations in
- 4:55Speaker 2: the brain.
- 4:56Speaker 3: Yes, highly specialized and spatially distributed, and they are all
- 5:00Speaker 3: firing simultaneously, continuously sending electrochemical signals across billions of synapses.
- 5:07Speaker 3: But there is no anatomical headquarters where all this data
- 5:10Speaker 3: is funneled to be viewed by a single observer, so.
- 5:13Speaker 2: The information doesn't converge into a single point at all.
- 5:16Speaker 3: Never.
- 5:16Speaker 2: I'm picturing a massive, complex symphony orchestra, like you've got
- 5:21Speaker 2: the string section over here, the brass section over there,
- 5:24Speaker 2: the percussion in the back.
- 5:26Speaker 3: That is a brilliant way to visualize it.
- 5:27Speaker 2: Right, So every single musician representing a memory, an emotion,
- 5:31Speaker 2: a piece of language is playing their parts simultaneously. But
- 5:36Speaker 2: in this biological orchestra, there is no conductor on the podium.
- 5:40Speaker 3: There is absolutely no conductor.
- 5:42Speaker 2: There's no central figure waving a baton telling the visual
- 5:46Speaker 2: cortex when to come in or the emotional centers when
- 5:48Speaker 2: to get louder. Yet somehow the music that comes out
- 5:52Speaker 2: is this perfectly synchronized, unified symphony.
- 5:56Speaker 3: Yes, and that symphony analogy brings us directly to what
- 6:00Speaker 3: neuroscientists called the binding problem.
- 6:02Speaker 2: The binding problem.
- 6:03Speaker 3: Yeah, it's the question of how the brain binds the color, shape,
- 6:06Speaker 3: and motion of say, a flying bird, into a single
- 6:09Speaker 3: conscious experience without a central conductor organizing the data.
- 6:13Speaker 2: Okay, so how does it do it if there's no conductor,
- 6:15Speaker 2: Why isn't it just noise?
- 6:17Speaker 3: The answer lies in the rhythmic synchronization of neural firing.
- 6:20Speaker 3: The mind is a profoundly decentralized process that integrates widely
- 6:25Speaker 3: distributed information through synchronized electrical oscillations.
- 6:29Speaker 2: Wow, so it's the timing of the firing that links.
- 6:31Speaker 3: It all together exactly. It happens so rapidly that it
- 6:34Speaker 3: creates the illusion of continuity. It weaves a cohesive output
- 6:38Speaker 3: from totally decentralized inputs. And what makes this so compelling
- 6:42Speaker 3: is that humanity suspected this long before we had fMRI machines.
- 6:47Speaker 2: Really like, ancient philosophers figured this out.
- 6:50Speaker 3: Yes, thousands of years ago. The Buddhist concept of anata
- 6:54Speaker 3: or non self arrived at this exact conclusion through intense,
- 6:58Speaker 3: sustained introspects.
- 7:00Speaker 2: So they were basically doing early neuroscience just through meditation
- 7:04Speaker 2: pretty much.
- 7:05Speaker 3: Yeah, they sat down, looked inward for the pilot and
- 7:07Speaker 3: only found the turning dials. They argued that the self
- 7:11Speaker 3: is an impermanent, ever changing, amaldamation of physical forms, feelings, perceptions,
- 7:15Speaker 3: and mental formations.
- 7:16Speaker 2: That is wild that they figured that out without brain scanners.
- 7:19Speaker 2: Did anyone in the West catch on to this?
- 7:21Speaker 3: It did, Yeah, we saw this echoed in the eighteenth
- 7:23Speaker 3: century by the Scottish philosopher David Hume in his Treatise
- 7:27Speaker 3: of Human Nature. Hume argued that whenever he tried to
- 7:30Speaker 3: enter most intimately into what he called himself, he always
- 7:33Speaker 3: stumbled upon some particular perception or another, like.
- 7:36Speaker 2: A feeling of heat or cold, or an emotion exactly.
- 7:39Speaker 3: Yeah, heat or cold light or shade, love or hatred.
- 7:44Speaker 3: He wrote that he could never catch himself at any
- 7:47Speaker 3: time without a perception, and it could never observe anything
- 7:50Speaker 3: but the perception.
- 7:51Speaker 2: So he looked for the self and only found the experiences.
- 7:54Speaker 3: Right, he concluded that humans are nothing but a bundle
- 7:58Speaker 3: or collection of different perceptions succeeding each other with inconceivable rapidity.
- 8:03Speaker 2: Hume's bundle theory. I remember learning about that.
- 8:05Speaker 3: Yes, it was a philosophical precursor to the modern neuroscientific consensus.
- 8:09Speaker 3: We are finding the hard empirical evidence for Hume's introspection
- 8:13Speaker 3: in the physical architecture of the brain.
- 8:15Speaker 2: So the self isn't the container holding the perceptions. The
- 8:18Speaker 2: self is merely an emergent property of the perceptions interacting.
- 8:22Speaker 3: You nailed it, okay.
- 8:23Speaker 2: So if the brain is just this decentralized network, an
- 8:26Speaker 2: orchestra without a conductor, generating an illusion of a self,
- 8:30Speaker 2: what happens when that physical network breaks down?
- 8:33Speaker 3: That is where things get really fascinating and honestly quite tragic.
- 8:37Speaker 2: Because it seems to me that if the self were
- 8:39Speaker 2: an indestructible soul or a permanent core essence, physical damage
- 8:43Speaker 2: to the brain shouldn't fundamentally change who you are.
- 8:46Speaker 3: It shouldn't logically.
- 8:47Speaker 2: It might change your ability to operate the body, like
- 8:50Speaker 2: cutting the wires to a steering wheel, but the driver
- 8:53Speaker 2: should remain intact. But if the self is just an
- 8:56Speaker 2: illusion generated by interconnected systems, you should see that illusion
- 9:01Speaker 2: visibly fracture when the physical systems fracture.
- 9:04Speaker 3: And that is exactly what we see. The neurological evidence
- 9:07Speaker 3: here is stark. When specific regions of the brain are
- 9:10Speaker 3: damaged by trauma, tumors, or neurodegenerative diseases, it radically alters
- 9:16Speaker 3: a person's personality.
- 9:17Speaker 2: It changes their actual identity entirely.
- 9:19Speaker 3: Yeah, it can change their moral compass, their emotional responses,
- 9:22Speaker 3: and their very perception of their own identity. The classic
- 9:26Speaker 3: historical case is Phineas gauge.
- 9:28Speaker 2: Oh, the railroad worker with the spike through his head.
- 9:31Speaker 3: Just a nineteenth century railroad worker who survived a large
- 9:34Speaker 3: iron rod being driven completely through his skull, destroying much
- 9:38Speaker 3: of his left frontal lobe.
- 9:39Speaker 2: And he lived, which is crazy enough, But he changed
- 9:41Speaker 2: right traumatically.
- 9:43Speaker 3: Before the accident, Gage was described as hard working, responsible,
- 9:49Speaker 3: and mild mannered. Afterward, he became impulsive, irreverent and profane. Wow,
- 9:55Speaker 3: his friends famously said he was no longer gauge. The
- 9:58Speaker 3: physical substrate chain changed, and therefore the self changed.
- 10:03Speaker 2: That totally shatters the idea of an immutable soul. The
- 10:07Speaker 2: personality didn't survive the physical damage to the frontal lobe.
- 10:10Speaker 3: No, it didn't. And it goes even deeper than just
- 10:13Speaker 3: personality shifts. Consider conditions like somato paraphrenia or as amaticg nosia.
- 10:18Speaker 2: Now, those are some big words. What do those mean?
- 10:20Speaker 3: They are neurological disorders, often resulting from damage to the
- 10:23Speaker 3: pridal lobe, which is where the brain maintains its topographical
- 10:26Speaker 3: map of the physical body.
- 10:27Speaker 2: Okay, so the brain's internal map of where the arms
- 10:29Speaker 2: and legs are.
- 10:30Speaker 3: Right. Patients of these conditions will look at their own
- 10:33Speaker 3: armor leg and completely deny that it belongs to them.
- 10:35Speaker 2: Wait, hold on. They look down see an arm physically
- 10:38Speaker 2: attached to their own shoulder and genuinely believe it is
- 10:41Speaker 2: not theirs.
- 10:42Speaker 3: Yes, they will insist with absolute conviction that the limb
- 10:47Speaker 3: belongs to the doctor, or a family member, or even
- 10:50Speaker 3: a stranger hiding under the bed.
- 10:52Speaker 2: That is terrifying.
- 10:54Speaker 3: They might even try to throw their own leg out
- 10:56Speaker 3: of bed, believing it's a foreign object that has been
- 10:58Speaker 3: placed on them while they slept. Because the parietal lobe
- 11:01Speaker 3: is responsible for integrating sensory information to form a coherent
- 11:05Speaker 3: sense of bodily ownership. When that specific cluster of neurons
- 11:09Speaker 3: is damaged, the self simply loses a piece of its territory.
- 11:13Speaker 2: So the boundary of me physically shrinks.
- 11:16Speaker 3: Exactly if the self were a unified, non physical observer,
- 11:21Speaker 3: localized physical damage shouldn't be able to carve away the
- 11:24Speaker 3: subjective feeling of owning your own left arm.
- 11:26Speaker 2: That makes total sense. The fact that the sense of
- 11:29Speaker 2: self can be chipped away or spatially fragmented proves that
- 11:32Speaker 2: it is a composite. It emerges from multiple systems working
- 11:35Speaker 2: dynamically right.
- 11:36Speaker 3: When one system goes offline, the geometry of the self
- 11:39Speaker 3: physically changes.
- 11:41Speaker 2: That is deeply unsettling because it roots our entire identity
- 11:44Speaker 2: in such fragile biological wiring. But the ultimate example of
- 11:50Speaker 2: this fracturing has to be the split brain patients.
- 11:52Speaker 3: Oh absolutely, I've read.
- 11:53Speaker 2: A bit about this and it completely defies common sense.
- 11:57Speaker 2: Let's dive into the mechanics of this, because it challenges
- 12:00Speaker 2: everything we assume about having one mind per body.
- 12:03Speaker 3: The split brain phenomenon really revolutionized our understanding of consciousness.
- 12:08Speaker 3: In the mid twentieth century, surgeons developed a procedure called
- 12:12Speaker 3: a corpus calisotomy to treat patients with debilitating, life threatening epilepsy.
- 12:17Speaker 2: Okay, corpus calisotomy, what exactly are they cutting?
- 12:21Speaker 3: They physically sever the corpus colossum. That's the massive bundle
- 12:24Speaker 3: of millions of nerve fibers connecting the left and right
- 12:27Speaker 3: hemispheres of the brain.
- 12:28Speaker 2: Why on earth would they do that?
- 12:29Speaker 3: The goal was to prevent the electrical storms of an
- 12:32Speaker 3: epileptic seizure from cascading from one hemisphere to the other.
- 12:36Speaker 3: By cutting the bridge, they contained the seizure to one side.
- 12:39Speaker 2: So they literally cut the main bridge, allowing the left
- 12:42Speaker 2: side of the brain to talk to the right side.
- 12:44Speaker 2: The brain is sliced down the middle communication wise.
- 12:47Speaker 3: That is the physical reality and the behavioral consequences, which
- 12:51Speaker 3: were studied extensively by neuroscientists like Roger Sperry and Michael Gazaniga,
- 12:56Speaker 3: are just astonishing.
- 12:58Speaker 2: What happens to the person? Do they survive intact?
- 13:02Speaker 3: They do? But after the surgery, the two hemispheres begin
- 13:05Speaker 3: to behave as semi independent minds. They can process information differently,
- 13:11Speaker 3: learn independently, and even hold conflicting desires.
- 13:14Speaker 2: Wait, two minds in one head, how does that even
- 13:17Speaker 2: present itself.
- 13:18Speaker 3: To understand this, you have to understand how our visual
- 13:20Speaker 3: system is wired. It's a bit of a mind bender.
- 13:23Speaker 3: The right half of your visual field, what you see
- 13:26Speaker 3: out of the right side of both eyes, is processed
- 13:29Speaker 3: entirely by the left hemisphere of your brain.
- 13:31Speaker 2: Okay, so right side of the world goes to the
- 13:33Speaker 2: left brain right, and.
- 13:34Speaker 3: The left half of your visual field is processed entirely
- 13:36Speaker 3: by the right hemisphere. Normally, the intact corpus colisomme shares
- 13:40Speaker 3: this data instantly, so you see one seamless world.
- 13:43Speaker 2: But in these patients, that bridge is totally gone. The
- 13:45Speaker 2: two sides can't share notes exactly.
- 13:48Speaker 3: So Kazinga and his team used a device called a
- 13:51Speaker 3: tachistoscope to flash images so quickly that the patient couldn't
- 13:55Speaker 3: move their eyes to compensate. Okay, if they flashed a
- 13:57Speaker 3: picture of a snowy winter scene to the the left
- 14:00Speaker 3: visual field, only the right hemisphere saide. If they flashed
- 14:04Speaker 3: the picture of a chicken claw to the right visual
- 14:06Speaker 3: field only the left hemisphere saide.
- 14:08Speaker 2: Okay, my brain is already starting to hurt trying to
- 14:10Speaker 2: track the left right crossing. But I'm with you. The
- 14:13Speaker 2: right brain see snow, the left brain sees a chicken claw.
- 14:17Speaker 3: Now Here is the crucial anatomical quirk. In most people,
- 14:21Speaker 3: the centers for speech and language are located almost exclusively
- 14:24Speaker 3: in the left hemisphere.
- 14:25Speaker 2: So the left brain is the talker exactly.
- 14:28Speaker 3: The right hemisphere is largely mute. It can't speak, but
- 14:31Speaker 3: it can control the left hand.
- 14:33Speaker 2: Okay, right brain see snow, can't speak, but controls the
- 14:35Speaker 2: left hand. Left brain sees the chicken, can speak and
- 14:39Speaker 2: controls the right hand. This is a crazy setup.
- 14:42Speaker 3: It is so. In one famous experiment with the patient
- 14:44Speaker 3: known as Patient PS, the researchers showed the snow scene
- 14:47Speaker 3: to the right hemisphere and the chicken claw of the
- 14:50Speaker 3: left hemisphere simultaneously.
- 14:51Speaker 2: And what did they ask the patient to do.
- 14:53Speaker 3: They placed a series of cards on the table in
- 14:55Speaker 3: front of him and asked him to point to what
- 14:57Speaker 3: he saw.
- 14:58Speaker 2: Oh wow, so the hands are going to do two
- 15:00Speaker 2: different things.
- 15:01Speaker 3: That is exactly how the body reacted. The patient's left
- 15:04Speaker 3: hand pointed to a shovel because the right hemisphere associated
- 15:08Speaker 3: the shovel with the snow scene it saw. Right Simultaneously,
- 15:12Speaker 3: the patient's right hand pointed to a chicken because the
- 15:15Speaker 3: left hemisphere saw the chicken claw.
- 15:17Speaker 2: So you have two hands controlled by two disconnected halves
- 15:21Speaker 2: of the brain, making two independent logical choices based on
- 15:25Speaker 2: entirely different sets of information.
- 15:27Speaker 3: Precisely two separate logical processing streams, resulting in two physical actions.
- 15:32Speaker 2: Okay, here is the huge question. If their brain is
- 15:35Speaker 2: literally split into two independent networks that can hold different
- 15:39Speaker 2: information and make different physical choices simultaneously, do these patients
- 15:44Speaker 2: feel like two people trapped in one body?
- 15:46Speaker 3: That is the crux of the illusion. The answer is
- 15:49Speaker 3: almost universally no.
- 15:50Speaker 2: Really, they don't wake up feeling like they have a
- 15:53Speaker 2: roommate in their skull fighting for the steering wheel.
- 15:56Speaker 3: No. Despite a profound literal physical division of neural network,
- 16:01Speaker 3: these patients continue experiencing themselves as a single, unified individual.
- 16:07Speaker 3: They did not report feelings split at all.
- 16:09Speaker 2: They feel like the exact same singular eye they were before.
- 16:13Speaker 3: The surgery, exactly the same.
- 16:15Speaker 2: But how does that work conceptually? If the left hand
- 16:18Speaker 2: literally doesn't know what the right hand is doing, and
- 16:21Speaker 2: the language center is completely blind to half of reality.
- 16:24Speaker 2: How does the conscious experience remain unified?
- 16:26Speaker 3: It works because of what Gazaniga termed the left hemisphere interpreter.
- 16:30Speaker 2: The left hemisphere interpreter, okay, what does that do?
- 16:32Speaker 3: It turns out the brain is an absolute master storyteller.
- 16:37Speaker 3: It's relentlessly driven to construct a coherent narrative to explain
- 16:41Speaker 3: our actions, even when it lacks the physical data to
- 16:43Speaker 3: do so.
- 16:44Speaker 2: Give me an example with patient PS, going.
- 16:46Speaker 3: Back to that experiment, after he pointed to the shovel
- 16:48Speaker 3: with his left hand and the chicken with his right,
- 16:51Speaker 3: the researcher asked him out loud, why did you point
- 16:53Speaker 3: to those items?
- 16:54Speaker 2: Er?
- 16:55Speaker 3: Okay, So the left hemisphere, which controls the mouth and speech,
- 16:58Speaker 3: only saw the chicken cloth. It has absolutely no idea
- 17:02Speaker 3: why the left hand just pointed to a snowshovel, none
- 17:04Speaker 3: at all. If it were honest, it would just say
- 17:06Speaker 3: I saw a chicken cloth, so I pointed to the chicken.
- 17:09Speaker 3: But I have no earthly clue what my left hand.
- 17:11Speaker 2: Is doing right now, right, But that is not what happens.
- 17:15Speaker 2: The left hemisphere interpreter instantly fabricates a logical, plausible narrative
- 17:20Speaker 2: to cover the gap in its knowledge.
- 17:22Speaker 3: What does he say?
- 17:23Speaker 2: Patient ps verbally replied, Oh, that's simple. The chicken claw
- 17:26Speaker 2: goes with the chicken, and you need a shovel to
- 17:28Speaker 2: clean out the chicken shed.
- 17:29Speaker 3: Wow. The brain just invents a fictionon on the spot.
- 17:33Speaker 3: It literally hallucinates a reason to make it all fit together.
- 17:36Speaker 2: It stitches the fragmented reality together with a story. But
- 17:39Speaker 2: here's the crucial part. It does not feel like a
- 17:41Speaker 2: lie to the patient.
- 17:43Speaker 3: It feels like the truth to them. It feels like
- 17:45Speaker 3: a genuine, introspective truth. The patient fully believes that was
- 17:49Speaker 3: their conscious intention all along. The interpreter continuously generates an
- 17:54Speaker 3: explanatory narrative to make sense of what the body's doing,
- 17:57Speaker 3: maintaining the illusion of a single, unified agent who is
- 18:01Speaker 3: totally in control.
- 18:02Speaker 2: It just paves right over the physical division.
- 18:05Speaker 3: It paves over it completely.
- 18:06Speaker 2: That is deeply profound. I mean, if my brain is
- 18:09Speaker 2: willing to lie to me so effortlessly about why I
- 18:12Speaker 2: just pointed out a shovel, and if that lie feels
- 18:15Speaker 2: indistinguishable from the truth, how can I trust my brain
- 18:19Speaker 2: when It tells me, why make any decision?
- 18:21Speaker 3: You're hitting on the core problem.
- 18:23Speaker 2: It forces me to wonder, if the narrative machine covers
- 18:26Speaker 2: up extreme physical divisions, is it doing the exact same
- 18:29Speaker 2: thing with my normal, everyday choices? Are my reasons for
- 18:32Speaker 2: choosing my career or picking my lunch or reaching for
- 18:35Speaker 2: this coffee cup? Right now, just post talk stories spun
- 18:38Speaker 2: by the interpreter.
- 18:39Speaker 3: You just walked right into one of the most vigorously
- 18:41Speaker 3: debated topics and cognitive neuroscience, the illusion of free will
- 18:45Speaker 3: and the concept of the retrospective narrator.
- 18:47Speaker 2: For retrospective narrator, I love that term.
- 18:49Speaker 3: If the interpreter module is constantly spinning stories to explain
- 18:53Speaker 3: actions after they happen, it challenges the deeply held intuition
- 18:57Speaker 3: that our conscious self is the author initiating the action.
- 19:01Speaker 3: We have to look at the work of neurobiologists Benjamin
- 19:03Speaker 3: Lebett in the nineteen eighties.
- 19:05Speaker 2: Oh, I know Libet's experiments. They are basically the boogeyman
- 19:07Speaker 2: for anyone defending free will.
- 19:09Speaker 3: They really are. His work set off a shockwave through
- 19:12Speaker 3: philosophy and science.
- 19:13Speaker 2: Walk us through it. How exactly did he measure this?
- 19:17Speaker 3: Libett designed a surprisingly simple but ingenious experiment. He hooked
- 19:21Speaker 3: subjects up to an electrodecephalogram or EEG by placing electrodes
- 19:26Speaker 3: on their scalps to measure electrical activity in the.
- 19:29Speaker 2: Brain looking at a specific area.
- 19:31Speaker 3: Yes, specifically looking at the supplementary motor area. He also
- 19:35Speaker 3: attached electrodes to their wrists to measure the exact millisecond
- 19:38Speaker 3: their muscles began to move.
- 19:40Speaker 2: Okay, so brain wires and wristwires right.
- 19:42Speaker 3: Then, he asked the subjects to look at a highly
- 19:44Speaker 3: precise clock with a dot sweeping rapidly around a dial.
- 19:48Speaker 3: Their instructions were simple, whenever you feel the spontaneous urge
- 19:51Speaker 3: to flex your wrist.
- 19:52Speaker 2: Do it just randomly whatever they want exactly.
- 19:55Speaker 3: Yeah, But critically, he asked them to note the exact
- 19:58Speaker 3: position of the dot on the the very moment they
- 20:02Speaker 3: became consciously aware of their intention to move.
- 20:04Speaker 2: So he's tracking three separate distinct events, the brain activity,
- 20:09Speaker 2: the conscious feeling of making the choice, and the actual
- 20:12Speaker 2: physical movement of the wrist.
- 20:14Speaker 3: Correct. Now, common sense tells us the chronological order should
- 20:17Speaker 3: be straightforward.
- 20:18Speaker 2: Right. First, the conscious self decides to move. Second, the
- 20:21Speaker 2: brain's motor cortex fires to execute the command, third the
- 20:25Speaker 2: wrist moves.
- 20:27Speaker 3: But Lebette found something that inverted our entire understanding of intention.
- 20:31Speaker 3: The EEG detected a build up of neurological activity what
- 20:35Speaker 3: is called the readiness potential, originating in the motor cortex.
- 20:38Speaker 2: And when did that happen?
- 20:40Speaker 3: This readiness potential began firing approximately three hundred and fifty
- 20:43Speaker 3: milliseconds before the subject reported feeling the conscious intention to move.
- 20:46Speaker 2: Wait, let me make absolutely sure I'm following the timeline here.
- 20:49Speaker 2: The physical brain starts preparing to move the wrist. Then
- 20:53Speaker 2: over a third of a second later, the person thinks
- 20:55Speaker 2: I'm going to move my wrist now, and then the
- 20:57Speaker 2: risk moves. So the brain initiate the action before the
- 21:01Speaker 2: mind was aware of it.
- 21:03Speaker 3: The unconscious neural systems initiated the action prior to conscious intention,
- 21:07Speaker 3: and modern versions of this experiment have pushed that timeline
- 21:11Speaker 3: much much.
- 21:11Speaker 2: Further back, further than a third of a second.
- 21:14Speaker 3: Oh Yes. Using advanced fMRI pattern recognition, researchers like John
- 21:19Speaker 3: Dylan Haynes have been able to predict which button a
- 21:22Speaker 3: subject will press up to seven to ten seconds before
- 21:25Speaker 3: the subject consciously registers making the decision.
- 21:28Speaker 2: Ten seconds yes.
- 21:29Speaker 3: By monitoring activity in the front of polar cortex, the
- 21:32Speaker 3: researchers knew what the subject was going to do, long
- 21:35Speaker 3: before the subject's conscious self knew.
- 21:37Speaker 2: Okay, I have to push back on this a little
- 21:38Speaker 2: bit because it feels entirely deterministic. If I'm reaching for
- 21:42Speaker 2: my coffee mug right now, you're telling me deeper unconscious
- 21:45Speaker 2: algorithms in my brain calculated that I was thirsty, initiated
- 21:49Speaker 2: the motor sequence, began lifting my arm, and then a
- 21:52Speaker 2: fraction of a second later, my conscious awareness just catches
- 21:54Speaker 2: up and my brain whispers, hey, we decided to drink coffee.
- 21:58Speaker 3: That is essentially what the data suggests.
- 22:00Speaker 2: Is my conscious self just a passenger taking credit for
- 22:03Speaker 2: the driving. Is the feeling of free will literally just
- 22:07Speaker 2: a delayed notification on my phone.
- 22:10Speaker 3: Many neuroscientists, like Robert Sapolski argue exactly that the conscious
- 22:15Speaker 3: self might not operate as a direct controller initiating thoughts
- 22:18Speaker 3: and actions from a vacuum.
- 22:19Speaker 2: So what is it doing then?
- 22:21Speaker 3: Instead, it operates as an interpretive system. The retrospective narrator
- 22:25Speaker 3: we saw on the split brain patients. Its job is
- 22:28Speaker 3: to observe what the unconscious neural machinery just executed, or
- 22:32Speaker 3: what thought just bubbled up into awareness, and instantly weave
- 22:35Speaker 3: it into a coherent story of agency.
- 22:37Speaker 2: Unbelievable.
- 22:38Speaker 3: The feeling of authorship, the feeling of I did that,
- 22:41Speaker 3: is an explanatory story generated post event.
- 22:43Speaker 2: So my conscious self isn't the director shouting action on
- 22:47Speaker 2: a movie set. My conscious self is a guy sitting
- 22:50Speaker 2: in the back row of the theater watching the movie.
- 22:52Speaker 2: But the brain's interpreter is pumping a chemical illusion into
- 22:55Speaker 2: a system that convinces him he's directing the film in
- 22:58Speaker 2: real time.
- 22:59Speaker 3: That is a harsh, but highly accurate way to frame
- 23:02Speaker 3: the retrospective narrator hypothesis. It completely reframes daily agency.
- 23:06Speaker 2: It really does. You assume you are the active director
- 23:09Speaker 2: of your life, meticulously weighing variables and deploying free will.
- 23:14Speaker 3: But this neuroscientific model suggests you're a conscious observer, experiencing
- 23:19Speaker 3: decisions as they emerge from the incomprehensibly complex, unconscious depths
- 23:24Speaker 3: of your biology and environment.
- 23:26Speaker 2: So the decision is the output of biological computation.
- 23:30Speaker 3: Yes, and the feeling of deciding is just the user
- 23:33Speaker 3: interface updating to reflect the new state.
- 23:35Speaker 2: Okay, if the present moment is just a story we're
- 23:37Speaker 2: being told by our brains interpreter. If current actions are
- 23:41Speaker 2: heavily reliant on retrospective storytelling, how can I trust my past?
- 23:45Speaker 3: Ah? Now we're getting into memory.
- 23:47Speaker 2: Right, Because for me, the bedrock of myself is my memory.
- 23:50Speaker 2: I feel like I'm the exact same person I was
- 23:52Speaker 2: when I was ten years old blowing out the candles
- 23:54Speaker 2: on a birthday cake. Because I can close my eyes
- 23:56Speaker 2: and vividly see the wax stripping, I can smell the smoke,
- 24:00Speaker 2: can feel the excitement.
- 24:01Speaker 3: It feels like a direct bridge to the past.
- 24:03Speaker 2: Memory continuity feels like the heavy anchor holding the ship
- 24:06Speaker 2: of the self in place across decades. Are you going
- 24:08Speaker 2: to tell me that anchor is a hallucination too?
- 24:11Speaker 3: Well, if we look closely at the cognitive science of memory,
- 24:15Speaker 3: that anchor is made of sand.
- 24:17Speaker 2: Oh boy.
- 24:18Speaker 3: Most people intuitively operate on the video camera model of memory.
- 24:22Speaker 3: We think our eyes record the data, it gets written
- 24:25Speaker 3: to a biological hard drive in the hippocampus, and when
- 24:27Speaker 3: we reminisce, we just double click the file and watch
- 24:29Speaker 3: the playback.
- 24:30Speaker 2: Right like pulling up a YouTube video in your head.
- 24:32Speaker 3: But neurobiology shows us that memory is not reproductive. It
- 24:36Speaker 3: is heavily reconstructive.
- 24:37Speaker 2: Reconstructive meaning the brain is actively rebuilding the event from
- 24:41Speaker 2: scratch every single time I think about.
- 24:43Speaker 3: It, exactly that. The process is called memory reconsolidation. When
- 24:47Speaker 3: you experience an event, the sensory details are distributed across
- 24:51Speaker 3: various parts of the cortex. Okay, when you recall the memory,
- 24:54Speaker 3: your brain has to gather those fragmented traces and weave
- 24:57Speaker 3: them back together. But here is the critical vulnerability. During
- 25:01Speaker 3: the act recall, the memory trace becomes biologically unstable. It
- 25:05Speaker 3: becomes malleable.
- 25:06Speaker 2: So just by remembering it, I'm making it vulnerable to changes.
- 25:10Speaker 3: Yes, it is influenced by your current emotional state, your
- 25:14Speaker 3: current beliefs, and new information you've acquired since the event happened.
- 25:19Speaker 3: When the brain resaves the memory, when it reconsolidates it,
- 25:23Speaker 3: it saves the new altered version. Wait really, yes, every
- 25:28Speaker 3: time you remember something you were actually remembering the last
- 25:31Speaker 3: time you remembered it with all the new.
- 25:33Speaker 2: Edits baked in, It's like playing a massive game of
- 25:36Speaker 2: telephone with yourself across time. The message gets slightly corrupted
- 25:40Speaker 2: with every retelling.
- 25:41Speaker 3: It's exactly what happens.
- 25:42Speaker 2: I actually experienced something exactly like this. For years. I
- 25:46Speaker 2: had this vivid, terrifying memory of getting lost in a
- 25:49Speaker 2: massive grocery store when I was little.
- 25:51Speaker 3: I think a lot of people have a memory like that, right.
- 25:53Speaker 2: And I could picture the incredibly high shelves, the bright
- 25:56Speaker 2: fluorescent lights, the specific serial boxes I was staring at,
- 26:00Speaker 2: and the utter panic of looking for my mom.
- 26:03Speaker 3: Very detailed sensory information.
- 26:04Speaker 2: Extremely detailed. Anyway, I told the story at a family
- 26:07Speaker 2: gathering a few years ago, and my mother looked at
- 26:09Speaker 2: me and said, that wasn't you That happened to your
- 26:12Speaker 2: older brother before you were even born.
- 26:14Speaker 3: Wow, your brain completely stole his memory.
- 26:17Speaker 2: My brain had heard this story told so many times
- 26:20Speaker 2: when I was a toddler that it simply absorbed the narrative,
- 26:23Speaker 2: cast me in the lead role, and hallucinated the sensory
- 26:26Speaker 2: details of the cereal boxes and the lights to make
- 26:29Speaker 2: it believable.
- 26:30Speaker 3: That is a classic textbook example of source monitoring error
- 26:34Speaker 3: and false memory implantation.
- 26:36Speaker 2: False memory implantation Who studies that these phenomena were pioneered
- 26:41Speaker 2: by cognitive psychologist Elizabeth Loftus.
- 26:44Speaker 3: She demonstrated in laboratory settings that you can easily implant
- 26:49Speaker 3: entirely fictitious memories into people's.
- 26:51Speaker 2: Minds, like the grocery store thing.
- 26:53Speaker 3: Yes, like being lost in a shopping mall or spilling
- 26:55Speaker 3: a punch bowl at a wedding. Yeah, and you do
- 26:57Speaker 3: it simply by having trusted family members suggested.
- 27:00Speaker 2: And people just believe it.
- 27:01Speaker 3: Within a few days, a significant percentage of subjects will
- 27:04Speaker 3: not only believe the false event occurred, but they will
- 27:06Speaker 3: generate rich sensory details to flesh out the memory. They
- 27:11Speaker 3: will remember the color of the punch or the face
- 27:14Speaker 3: of the mall security guard.
- 27:15Speaker 2: If memories can be fabricated that easily, and if real
- 27:18Speaker 2: memories are constantly being overwritten and edited during reconsolidation, the
- 27:23Speaker 2: continuity of my past is basically a work of historical
- 27:26Speaker 2: fiction based on true events.
- 27:28Speaker 3: It is an evolving story. Despite these massive inconsistencies, despite
- 27:32Speaker 3: the fact that your cellular makeup has completely regenerated over
- 27:36Speaker 3: the years and your memories are fluid, you still maintain
- 27:39Speaker 3: a fierce feeling of being a single, unbroken person throughout
- 27:42Speaker 3: your lifespan.
- 27:43Speaker 2: Yeah, I still feel like me.
- 27:44Speaker 3: What this reveals is that identity does not rely on
- 27:47Speaker 3: objective factual continuity. The brain doesn't care if the facts
- 27:52Speaker 3: are perfectly accurate. It only cares that the narrative flows logically.
- 27:55Speaker 2: So as long as the story makes sense, the brain
- 27:57Speaker 2: is happy.
- 27:58Speaker 3: Exactly, the self is not a fixed entity traveling on
- 28:01Speaker 3: a straight track through time. It is the brain's ability
- 28:04Speaker 3: to maintain a coherent narrative structure over the chaos of.
- 28:08Speaker 2: Experience, which begs a massive overarching question. If the self
- 28:11Speaker 2: is just an actively maintained story, a retrospective narrator that
- 28:16Speaker 2: hallucinates agency, a reconstructive memory machine prone to massive errors,
- 28:20Speaker 2: why do we have it?
- 28:21Speaker 3: The why is always the best question.
- 28:23Speaker 2: Because evolution is ruthlessly efficient. Right, generating and maintaining this elaborate,
- 28:29Speaker 2: energy intensive illusion of a unified me seems like an
- 28:33Speaker 2: awful lot of extra cognitive overhead. What is the survival
- 28:36Speaker 2: advantage of being diluted into thinking I am a pilot?
- 28:40Speaker 3: From an evolutionary psychology perspective, the self is an exquisitely
- 28:44Speaker 3: adapted survival tool. How so you have to consider what
- 28:47Speaker 3: the illusion of a persistent self allows a biological organism
- 28:51Speaker 3: to do, particularly a highly social primate like us. The
- 28:55Speaker 3: Machiavelli intelligence hypothesis suggests that our brains grew large and
- 28:59Speaker 3: complex primarily to navigate the shifting sands of social groups.
- 29:03Speaker 2: So we needed big brains to deal with other humans.
- 29:06Speaker 3: Right. If an organism can model itself as a persistent
- 29:08Speaker 3: agent in the world, if you can say I exist,
- 29:10Speaker 3: I axid yesterday, and I will exist tomorrow, it is
- 29:14Speaker 3: vastly better equipped to survive.
- 29:15Speaker 2: Because if I don't believe I exist tomorrow, I have
- 29:17Speaker 2: absolutely no reason to forage for extra food today. I
- 29:20Speaker 2: wouldn't plan ahead precisely.
- 29:23Speaker 3: It allows for mental time travel. A persistent self model
- 29:27Speaker 3: allows you to plan for a future that hasn't happened yet. Crucially,
- 29:31Speaker 3: it allows you to track social debts and.
- 29:33Speaker 2: Favors ah like knowing who owes me a favor and
- 29:36Speaker 2: who stole my food exactly.
- 29:38Speaker 3: You can hold grudges, which deters exploitation. You can build alliances,
- 29:43Speaker 3: maintain your reputation, and execute complex multi stage plans with
- 29:46Speaker 3: other humans. If you didn't have a coherent narrative of
- 29:50Speaker 3: who you are in relation to the tribe, you would
- 29:52Speaker 3: be socially incapable.
- 29:54Speaker 2: So the self is a tool for socializing.
- 29:56Speaker 3: It's an adaptive interface. It's a functional reduction of reality
- 29:59Speaker 3: that will allows the organism to operate effectively in a
- 30:02Speaker 3: highly complex environment.
- 30:04Speaker 2: The word interface is the key here. It reminds me
- 30:07Speaker 2: of the cognitive scientist Donald Hoffman's interface theory of perception.
- 30:10Speaker 2: Have you heard of that?
- 30:11Speaker 3: Yes? The desktop metaphor, it's brilliant.
- 30:13Speaker 2: I love it so much. The sense of self is
- 30:15Speaker 2: exactly like a computer desktop. Think about the laptop you
- 30:19Speaker 2: use every day. Inside the casing of that machine, what
- 30:22Speaker 2: is actually happening is incomprehensibly complex.
- 30:25Speaker 3: It's just math and electricity, right.
- 30:27Speaker 2: It is a reality of silicon wafers, fluctuating voltage levels,
- 30:31Speaker 2: and billions of microscopic transistors flipping binary code at the
- 30:34Speaker 2: speed of light. But you, the user, cannot interact with
- 30:38Speaker 2: that reality.
- 30:39Speaker 3: No, of course not.
- 30:40Speaker 2: If you had to manually toggle millions of transistors just
- 30:43Speaker 2: the senate text message, you would be paralyzed. So the
- 30:46Speaker 2: operating system gives you a graphical user interface a GUI.
- 30:50Speaker 2: It gives you an intuitive, colorful desktop. It gives you
- 30:53Speaker 2: a little icon of a folder or a little icon
- 30:55Speaker 2: of a trash can you drag the document to the
- 30:57Speaker 2: trash can and it disappears.
- 31:00Speaker 3: The interface analogy is perhaps the most accurate way to
- 31:02Speaker 3: understand consciousness. Does the trash can actually exist inside the computer?
- 31:08Speaker 3: Is there a physical miniature metal bin sitting next to
- 31:11Speaker 3: the processor.
- 31:11Speaker 2: Of course not. It's a useful fiction. It's an icon
- 31:14Speaker 2: that represents complex underlying processes but hides the truth of
- 31:17Speaker 2: those processes from the user so they can actually get
- 31:20Speaker 2: work done.
- 31:20Speaker 3: And that is exactly what the self is. The self
- 31:23Speaker 3: is the brain's desktop interface. The underlying reality of your
- 31:26Speaker 3: brain is a universe of distributed neural activity, hormones, neurochemistry,
- 31:31Speaker 3: and raw sensory data.
- 31:32Speaker 2: And we can't handle all that.
- 31:34Speaker 3: Data, not consciously. If you are aware of every firing
- 31:38Speaker 3: sign apps, you would be paralyzed by the noise. So
- 31:41Speaker 3: evolution provided an operating system. It translates the incomprehensible complexity
- 31:46Speaker 3: of the neural hardware into a neat, manageable subjective experience.
- 31:50Speaker 2: It gives you the icon of me.
- 31:52Speaker 3: Yes, you use the me icon to interact with the world,
- 31:55Speaker 3: to make choices, to feel pain, to navigate society. The
- 31:59Speaker 3: self isn't the under lying reality of the biology, just
- 32:02Speaker 3: like the folder isn't the reality of the silicon, but
- 32:04Speaker 3: it is an absolutely essential interface for functioning.
- 32:07Speaker 2: I love that the self isn't a lie design to
- 32:10Speaker 2: trick us. It's a simplification designed to save us. But
- 32:13Speaker 2: bringing computer interfaces into this conversation opens up a terrifying
- 32:17Speaker 2: can of worms regarding artificial intelligence. Oh, it realized, Because
- 32:20Speaker 2: if the self is not a divine spark or a
- 32:21Speaker 2: biological soul, but simply a graphical user interface, an emergent
- 32:25Speaker 2: property of complex information processing, then we have to look
- 32:29Speaker 2: at modern neural networks.
- 32:30Speaker 3: We do large language models and advanced AI are processing
- 32:34Speaker 3: information in highly distributed, integrated ways.
- 32:37Speaker 2: Right, So if you build a sufficiently complex neural network
- 32:40Speaker 2: out of silicon, could a self interface emerge in that machine?
- 32:44Speaker 3: That is the existential question of our era. We're already
- 32:47Speaker 3: seeing AI systems fluidly used language, engage in strategic chain
- 32:52Speaker 3: of thought reasoning, and simulate emotional empathy.
- 32:55Speaker 2: But do they actually have a self?
- 32:57Speaker 3: Currently these systems are likely philosophical zombies. They process input
- 33:01Speaker 3: and generate output without any internal subjective experience. They don't
- 33:05Speaker 3: feel what it's like to be an AI.
- 33:06Speaker 2: Okay, good, that's reassuring.
- 33:08Speaker 3: However, if the self is merely an emergent property of
- 33:11Speaker 3: integrated information processing. There is no known law of physics
- 33:15Speaker 3: that restricts consciousness to biological substrates. Carbon does not have
- 33:20Speaker 3: a monopoly on emergent interfaces.
- 33:22Speaker 2: I'm going to push back hard here. Though a computer's
- 33:24Speaker 2: desktop interface is designed by a human programmer for a
- 33:27Speaker 2: human user, biological evolution designed our self interface because we
- 33:32Speaker 2: have fragile physical bodies that need to eat, reproduce, and
- 33:35Speaker 2: avoid predators. That's true, an AI running on a server
- 33:38Speaker 2: farm somewhere doesn't have a biological imperative to survive. It
- 33:42Speaker 2: doesn't need to hunt or find a mate. Why would
- 33:45Speaker 2: a silicon neural network naturally develop an interface of a
- 33:48Speaker 2: self if it doesn't face the evolutionary pressures that created ours.
- 33:52Speaker 3: That is a highly perceptive critique. It's true that an
- 33:55Speaker 3: AI doesn't need a self to avoid being eaten by
- 33:58Speaker 3: a lion, but it might need a self model for
- 34:00Speaker 3: computational efficiency.
- 34:02Speaker 2: Computational efficiency, how does a self help with that?
- 34:05Speaker 3: As AI systems are tasked with increasingly complex autonomous long
- 34:10Speaker 3: term goals in dynamic environments, they need to predict how
- 34:13Speaker 3: their own actions will affect the world. To do that accurately,
- 34:17Speaker 3: the system must maintain an internal model of its own capabilities,
- 34:21Speaker 3: its past actions, and its current state.
- 34:23Speaker 2: Oh, I see, it has to know where it ends
- 34:25Speaker 2: and the world begins to calculate outcomes.
- 34:27Speaker 3: Right, it needs a functional eye to run simulations of
- 34:30Speaker 3: the future. The interface might not emerge out of a
- 34:33Speaker 3: fear of death, but out of a need for informational
- 34:35Speaker 3: coherence and resource management. If humans and advanced AI both
- 34:40Speaker 3: rely on internal narrative models to function, it suggests that
- 34:44Speaker 3: the self is not a uniquely human metaphysical essence, but
- 34:48Speaker 3: a universal computational strategy. We might be on a continuum
- 34:52Speaker 3: of information processing alongside the machines we are building.
- 34:56Speaker 2: That significantly lowers humans from the pedestal of exceptional. But
- 35:01Speaker 2: let's bring this back down from the server farms to
- 35:03Speaker 2: human biology, because I want to know if this is
- 35:05Speaker 2: testable on a personal level.
- 35:07Speaker 3: It absolutely is.
- 35:08Speaker 2: If the self is just a cognitive interface, like an
- 35:10Speaker 2: app running in the background of my brain to help
- 35:12Speaker 2: my biology navigate the world. Is there any way to
- 35:15Speaker 2: force quit the application? Is there any way to log
- 35:18Speaker 2: out of the desktop and experience the raw processing without
- 35:21Speaker 2: the me icon getting in the way?
- 35:22Speaker 3: Yes, there is. Humanity has been exploring the methods to
- 35:25Speaker 3: temporarily turn off the interface for millennia, primarily through contemplative.
- 35:29Speaker 2: Practices like meditation.
- 35:31Speaker 3: Yes, the most compelling evidence comes from advanced meditative traditions
- 35:35Speaker 3: like tucchin or vipasta.
- 35:36Speaker 2: To be clear, we aren't talking about closing your eyes
- 35:39Speaker 2: for five minutes to lower your heart rate before a
- 35:41Speaker 2: stressful meeting. We're talking about rigorous, sustained mental training.
- 35:46Speaker 3: Oh, entirely. We're talking about highly experienced practitioners with thousands
- 35:51Speaker 3: of hours of contemplative training. These individuals frequently report entering
- 35:56Speaker 3: states of mind where the ordinary rigid boundaries of the
- 35:59Speaker 3: cell completely.
- 36:00Speaker 2: Dissolve, and they stay awake during this.
- 36:03Speaker 3: Yes, during these deep meditative states, they do not fall asleep.
- 36:06Speaker 3: They do not lose consciousness. In fact, they describe the
- 36:09Speaker 3: consciousness as becoming intensely clear, vivid, and hyper aware.
- 36:14Speaker 2: But the self goes away completely.
- 36:17Speaker 3: What vanishes entirely is the feeling of being a separate,
- 36:20Speaker 3: central observer to whom the experience is happening.
- 36:23Speaker 2: So the sensory movie is still playing on the screen,
- 36:25Speaker 2: the lights in the theater are on, but the guy
- 36:27Speaker 2: sitting in the back row claiming to direct it has
- 36:30Speaker 2: finally left the building.
- 36:31Speaker 3: Exactly they describe experiencing pure awareness. There is the act
- 36:36Speaker 3: of seeing, but no feeling of a seer. There's the
- 36:39Speaker 3: sensation of pain in the knee, but no sufferer who
- 36:42Speaker 3: owns the pain.
- 36:43Speaker 2: That's incredibly hard to imagine.
- 36:45Speaker 3: It is. The decentralized processes of the brain continue to
- 36:48Speaker 3: take in the world, but the narrative interpreter module that
- 36:52Speaker 3: usually steps in to claim ownership of those experiences has
- 36:55Speaker 3: been silenced. The interface is powered down.
- 36:58Speaker 2: Now a skeptical materialist might listen to them and say, well,
- 37:01Speaker 2: that's lovely, but it's just subjective mysticism. It's a hallucination
- 37:04Speaker 2: brought on by sensory deprivation. They are just feeling weird
- 37:08Speaker 2: things in their head.
- 37:09Speaker 3: And that is exactly where the modern neuroscience of meditation
- 37:12Speaker 3: has revolutionized the field. We no longer have to rely
- 37:16Speaker 3: purely on subjective reports.
- 37:18Speaker 2: You can actually measure it.
- 37:19Speaker 3: Yes, Researchers like Judson Brewer and Robin Carhars have put
- 37:22Speaker 3: advanced meditators into fMRI machines to watch the blood flow
- 37:26Speaker 3: and oxygenation levels in their brains while they enter these
- 37:29Speaker 3: states of ego.
- 37:30Speaker 2: Dissolution and what did they find?
- 37:31Speaker 3: The neurological data correlates perfectly with the subjective experience. What
- 37:35Speaker 3: we see is a dramatic deactivation of a specific brain
- 37:39Speaker 3: system called the default mode network or DMN.
- 37:42Speaker 2: The default mode network. Let's get anatomical for a second.
- 37:45Speaker 2: What specific parts of the brain are we talking about
- 37:47Speaker 2: here and what does this network actually do? And I'm
- 37:49Speaker 2: just you know, walking down the street.
- 37:51Speaker 3: Anatomically, the default mode network heavily involves the medial preferal
- 37:55Speaker 3: cortex and the posterior singular cortex. Okay, Functionally, it is
- 37:59Speaker 3: a large scale network that becomes highly active when your
- 38:03Speaker 3: brain is in a state of wakeful rest, meaning you
- 38:06Speaker 3: are not focused on a demanding task in the outside.
- 38:09Speaker 2: World, so when I'm just spacing out.
- 38:10Speaker 3: Basically, it is the neurological engine of mind wandering, daydreaming,
- 38:14Speaker 3: recalling the past, fretting about the future, and crucially, self
- 38:18Speaker 3: referential processing.
- 38:19Speaker 2: Self referential processing, so thinking about myself.
- 38:22Speaker 3: Yes, when you sit quietly in traffic and start ruminating
- 38:25Speaker 3: on an argument you had yesterday, or worrying about how
- 38:28Speaker 3: you'll look at a party tomorrow. When you are actively constructing, defending,
- 38:32Speaker 3: or projecting yourself in your mind. Your default mode network
- 38:36Speaker 3: is consuming a massive amount of metabolic energy.
- 38:39Speaker 2: It's the physical hardware running the narrative interpreter's software. It's
- 38:43Speaker 2: the microphone the ego uses to broadcast all its anxieties.
- 38:47Speaker 3: That's a great way to put it. Yes, And what
- 38:49Speaker 3: the fmr iData reveals is that during deep meditative states,
- 38:54Speaker 3: or even during intense flow states experienced by athletes or
- 38:57Speaker 3: musicians where they lose their sense of self and task,
- 39:00Speaker 3: the activity in the medial prefrontal cortex and the posterior
- 39:04Speaker 3: cingulate cortex drops off a cliff.
- 39:06Speaker 2: The blood flow just shifts away completely.
- 39:09Speaker 3: The default mode network quiets down. This provides hard physical
- 39:13Speaker 3: evidence that the ordinary self is not a permanent structural
- 39:17Speaker 3: feature of your brain. It is an actively maintained cognitive action.
- 39:21Speaker 2: It's something the brain is doing, not something it has.
- 39:24Speaker 3: Exactly when the network generating that action powers down, the
- 39:27Speaker 3: feeling of the self disappears, proving that subjective consciousness could
- 39:31Speaker 3: exist perfectly well without an eye attached to it.
- 39:34Speaker 2: It's a verb, not a noun. We aren't a self.
- 39:36Speaker 2: We are continuously selfing.
- 39:38Speaker 3: I love that selfing.
- 39:40Speaker 2: Okay. I need to take a breath here, because if
- 39:42Speaker 2: we follow this thread all the way to its logical conclusion,
- 39:45Speaker 2: things get incredibly heavy.
- 39:47Speaker 3: They certainly do.
- 39:48Speaker 2: If the self is an illusion, an interface, a post
- 39:51Speaker 2: action narrator without true free will, or reconstructive fiction, an
- 39:56Speaker 2: evolutionary tool that can be turned off with enough practice,
- 39:59Speaker 2: what happens to the bedrock of human society.
- 40:02Speaker 3: This is the ultimate friction point where neuroscience collides with
- 40:06Speaker 3: sociology and law. Civilization as we know it depends entirely
- 40:10Speaker 3: on the legal and moral assumption of stable, persistent identity structures.
- 40:15Speaker 2: Right, our entire world is built on the foundation that
- 40:18Speaker 2: a persistent you exists to be held accountable. Think about
- 40:21Speaker 2: the absolute collapse.
- 40:22Speaker 3: Of the rules that shakes everything.
- 40:24Speaker 2: Morality, law, politics, the concept of a credit score, personal responsibility.
- 40:28Speaker 2: They all assume that there is a stable, continuous entity
- 40:31Speaker 2: who freely makes a choice and then justly faces the
- 40:34Speaker 2: consequences of that choice.
- 40:36Speaker 3: That's the basis of our legal system.
- 40:37Speaker 2: So if there is no permanent self, and if decisions
- 40:40Speaker 2: are initiated by unconscious neurobiology before awareness even kicks in,
- 40:44Speaker 2: who deserves to go to jail for a crime committed
- 40:47Speaker 2: ten years ago? The brain that committed the crime has
- 40:50Speaker 2: physically changed. The cells have regenerated, the synaptic weights have shifted,
- 40:55Speaker 2: the memories have been corrupted, the narrative has evolved.
- 40:58Speaker 3: It creates a massive philosophic crisis.
- 41:01Speaker 2: If the self is just a constantly updating story generated
- 41:04Speaker 2: by a deterministic brain, how can retributive justice exist? Who
- 41:08Speaker 2: is responsible for anything?
- 41:10Speaker 3: If the self is a cognitive construction without ultimate free will,
- 41:15Speaker 3: then many of our most rigid social systems rest upon
- 41:18Speaker 3: functional necessary fictions rather than absolute metaphysical.
- 41:22Speaker 2: Certainties necessary fictions. That's a fragile foundation.
- 41:25Speaker 3: It is Robert Sapolski, who we mentioned earlier, argues that
- 41:28Speaker 3: understanding the neurobiology of behavior should lead us to completely
- 41:32Speaker 3: abandon the concept of attributed punishment, meaning punishing someone simply
- 41:36Speaker 3: because they deserve it.
- 41:37Speaker 2: So we just let criminals go?
- 41:39Speaker 3: No, not at all. He argues that if a person's brain, chemistry, genetics, trauma,
- 41:44Speaker 3: and environment deterministically produced a violent action, we should still
- 41:49Speaker 3: quarantine them to protect society. Much like you take a
- 41:52Speaker 3: car with broken brakes off the road, right.
- 41:54Speaker 2: You quarantine the car so it doesn't run anyone over.
- 41:56Speaker 3: Exactly, But we shouldn't impart moral evil to the car.
- 42:00Speaker 3: We don't hate the car. The philosophical tension is whether
- 42:03Speaker 3: true responsibility can exist without a stable, independent identity driving
- 42:08Speaker 3: the machine.
- 42:09Speaker 2: I can see how leaning into that could be terrifying
- 42:12Speaker 2: for a lot of people. It seems to lead straight
- 42:14Speaker 2: down a dark slide into pure nihilism. Someone could easily
- 42:17Speaker 2: listen to this and say, well, if I'm not real
- 42:19Speaker 2: and my choices are just biological computations, nothing matters. The
- 42:22Speaker 2: self is an illusion. My actions don't fundamentally belong to me,
- 42:26Speaker 2: so I can act as selfishly or destructively as I want.
- 42:29Speaker 3: That is the immediate warning issue by many ethicists. They
- 42:32Speaker 3: argue that abandoning the belief in a permanent self and
- 42:35Speaker 3: free will degrades moral behavior and leads to societal.
- 42:38Speaker 2: Collapse, which is a valid fear.
- 42:40Speaker 3: It is. But there's a counter argument championed by both
- 42:44Speaker 3: modern secular philosophers and ancient contemplarive traditions that suggest the
- 42:49Speaker 3: exact opposite trajectory.
- 42:51Speaker 2: Opposite.
- 42:51Speaker 3: Yes, they argue that deeply realizing the self is an
- 42:54Speaker 3: illusion doesn't lead to a cold, sociopathic nihilism. It actually,
- 42:59Speaker 3: naturally an organically encourages profound compassion.
- 43:02Speaker 2: I'm trying to connect those dots. How does realizing I
- 43:05Speaker 2: don't exist make me a kinder person? Walk me through
- 43:08Speaker 2: the mechanics of that empathy.
- 43:10Speaker 3: To understand that, you have to look at the root
- 43:13Speaker 3: cause of human tribalism and conflict. It almost always stems
- 43:16Speaker 3: from rigid ego.
- 43:17Speaker 2: Boundaries, us versus them.
- 43:19Speaker 3: Exactly, we draw a hard and permeable line between me
- 43:22Speaker 3: and you, between my tribe and your tribe. We fiercely
- 43:25Speaker 3: protect our individual identity, hoarding resources and projecting hostility to
- 43:29Speaker 3: defend the border of the self.
- 43:30Speaker 2: Because we think the self is a solid object that
- 43:32Speaker 2: needs defending.
- 43:33Speaker 3: Right, But if you deeply internalize the neuroscientific reality that
- 43:37Speaker 3: your self is fluid, that it is continuously constructed from
- 43:41Speaker 3: your environment, your biology, and your interactions with others, those
- 43:44Speaker 3: rigid boundaries begin to dissolve.
- 43:46Speaker 2: You soften the borders.
- 43:48Speaker 3: Yes, you realize that you are not a separate, isolated
- 43:52Speaker 3: monarch sitting inside a bone castle. You are a dynamic
- 43:56Speaker 3: process entirely interconnected with the processes around you. Your thoughts
- 44:01Speaker 3: are borrowed from culture, your biology is inherited from history.
- 44:05Speaker 3: Your emotions are reactions to your environment.
- 44:07Speaker 2: So nothing is truly separate.
- 44:09Speaker 3: Understanding this deep physical interconnectedness naturally weakens tribalism. It fosters
- 44:14Speaker 3: empathy because you recognize that the other is just another
- 44:17Speaker 3: temporary interface shaped by different external conditions.
- 44:21Speaker 2: It's the realization that instead of being separate solid waves
- 44:24Speaker 2: crashing aggressively against each other, we are all just temporary
- 44:27Speaker 2: movements of the exact same ocean. The boundary of the
- 44:30Speaker 2: wave is just an illusion of form, but the water
- 44:33Speaker 2: is continuous.
- 44:34Speaker 3: That is a beautiful way to put it. It's the
- 44:36Speaker 3: exact shift in perspective that contemplative traditions aim for. And
- 44:40Speaker 3: this brings us to the psychological payoff for the individual too.
- 44:43Speaker 2: Right, because this has to apply to our daily lives.
- 44:46Speaker 3: So much of the daily distress and psychological suffering your
- 44:49Speaker 3: experience is directly tied to the exhaustion of defending this
- 44:53Speaker 3: imaginary self.
- 44:54Speaker 2: Yeah, if you're listening to this, apply this to your
- 44:56Speaker 2: day to day. Think about how much of your baseline
- 44:59Speaker 2: str us and anxiety is devoted to protecting your conceptual identity.
- 45:04Speaker 2: You get anxious at work because someone criticized your presentation,
- 45:07Speaker 2: and your internal narrative of being a highly competent professional
- 45:11Speaker 2: is threatened exactly or you get furious because someone cuts
- 45:15Speaker 2: you off in traffic, and your social status as a
- 45:17Speaker 2: respected individual feels challenged. We spend vast reserves of emotional
- 45:22Speaker 2: energy defending our beliefs, our social standing, and our personal
- 45:25Speaker 2: narratives because we mistake the interface for a fundamental core.
- 45:29Speaker 3: We are defending a folder on the desktop as if
- 45:32Speaker 3: it were our life. That is exactly it, and the
- 45:34Speaker 3: ultimate fear, the existential anxiety regarding death is fundamentally the
- 45:39Speaker 3: fear of losing a self that might not even exist
- 45:42Speaker 3: in the solid way we assume it does.
- 45:43Speaker 2: If the self is less of a thing and more
- 45:45Speaker 2: of a transient process, realizing its fluidity can fundamentally change
- 45:49Speaker 2: how you process negative emotions right absolutely.
- 45:52Speaker 3: If you know the interface is just an interface, you
- 45:54Speaker 3: don't have to suffer as deeply when an error message
- 45:57Speaker 3: pops up. You can observe the anxiety or the anger
- 46:00Speaker 3: as weather patterns in the biological system, rather than taking
- 46:04Speaker 3: them as a tax on your core being.
- 46:06Speaker 2: That feels incredibly liberating. But I want to make sure
- 46:08Speaker 2: we don't leave the listener unmoored, floating in an existential
- 46:12Speaker 2: void where everything is just cold biology and computations. I
- 46:16Speaker 2: want to summarize this philosophical journey so we don't fall
- 46:19Speaker 2: into the trap of thinking that just because the self
- 46:21Speaker 2: is constructed, human life is somehow devoid of meaning.
- 46:24Speaker 3: That is the most crucial distinction to make. The Absence
- 46:27Speaker 3: of a fixed, permanent self within the brain does not
- 46:30Speaker 3: eliminate meaning. Your conscious experience still exists, Your emotional bonds
- 46:34Speaker 3: still matter profoundly, art, beauty, curiosity, love, and the visceral
- 46:39Speaker 3: reality of suffering. All of these remain experientially, undeniably real,
- 46:43Speaker 3: regardless of whether the self is a permanent, fundamental full
- 46:46Speaker 3: or a biologically constructed emergent process.
- 46:49Speaker 2: It makes me think of the difference between a rock
- 46:51Speaker 2: and a rainbow. The traditional intuitive view of the self
- 46:55Speaker 2: is that it's like a rock. It's solid, you can
- 46:58Speaker 2: pick it up, it has independent mass. It is a
- 47:00Speaker 2: permanent object that endures through time.
- 47:03Speaker 3: We want to be rocks, we do.
- 47:05Speaker 2: But we spend this entire conversation tearing the rock apart,
- 47:09Speaker 2: looking for it in the brain and realizing the self
- 47:12Speaker 2: isn't a rock. But that doesn't mean the self is nothing.
- 47:15Speaker 2: The self is a rainbow.
- 47:17Speaker 3: That is a phenomenal, scientifically precise analogy. Think about the
- 47:21Speaker 3: physics of a rainbow. A rainbow is not a solid object.
- 47:25Speaker 3: You cannot walk up to it and touch it. It
- 47:27Speaker 3: does not exist independently in a specific location.
- 47:30Speaker 2: No, it depends entirely on where you're standing exactly.
- 47:32Speaker 3: It is an emergent phenomenon. It is created dynamically by
- 47:36Speaker 3: the highly specific interaction of sunlight, water droplets suspended in
- 47:40Speaker 3: the air, and the specific geometric perspective of the observer.
- 47:44Speaker 3: If the light changes, if the rain stops, or if
- 47:46Speaker 3: you move your position, the rainbow shifts or vanishes.
- 47:50Speaker 2: But just because it isn't a solid rock, just because
- 47:52Speaker 2: you can't put it in a box and lock away,
- 47:53Speaker 2: does that mean the rainbow isn't real.
- 47:55Speaker 3: No, it is absolutely real. You can see it, you
- 47:58Speaker 3: can photograph it, you can point out to a friend,
- 48:01Speaker 3: You can be moved to tears by its beauty. Its
- 48:03Speaker 3: reality is just a different kind of reality. It is
- 48:06Speaker 3: an emergent reality dependent on conditions.
- 48:09Speaker 2: The self is a rainbow. It emerges dynamically from the
- 48:13Speaker 2: complex continuous interactions within your neural architecture, your reconstructed memories,
- 48:18Speaker 2: your biological drives, and your social environment.
- 48:21Speaker 3: It isn't a singular, permanent entity, but it is a
- 48:24Speaker 3: profoundly real phenomenon to.
- 48:25Speaker 2: Experience, and the universe operates through these emergent processes at
- 48:29Speaker 2: every level. Life emerges from chemistry even though no single
- 48:34Speaker 2: carbon atom is alive, Consciousness emerges from the synchronized firing
- 48:38Speaker 2: of neurons, and the self emerges from consciousness.
- 48:41Speaker 3: This neuroscientific interpretation preserves everything that matters. It preserves the
- 48:45Speaker 3: rigor of empirical science, and it preserves the profound, beauty, weight,
- 48:49Speaker 3: and meaning of your subjective experience.
- 48:51Speaker 2: It means we don't have to choose between hard science
- 48:54Speaker 2: and human meaning. We just have to upgrade our understanding
- 48:57Speaker 2: of what we actually are. The universe inside that our
- 49:00Speaker 2: skulls is far stranger, more decentralized, more complex, and ultimately
- 49:04Speaker 2: more profound than any solid, rigid identity could ever contain.
- 49:09Speaker 2: Well said, and that brings us to the end of
- 49:11Speaker 2: our journey today. I want to wrap this up by
- 49:14Speaker 2: addressing you directly the consciousness experiencing these words. Right now,
- 49:17Speaker 2: we've taken apart the pilot and the cockpit, the conductor
- 49:20Speaker 2: of the orchestra, the narrative interpreter, the reconsolidating memory machine,
- 49:24Speaker 2: and the desktop interface.
- 49:26Speaker 3: We've covered a lot of ground.
- 49:28Speaker 2: We have, and we've seen that the rigid, unchanging self
- 49:31Speaker 2: you spend your entire life desperately defending, defining, and worrying
- 49:35Speaker 2: about doesn't actually exist in the way you intuitively thought
- 49:38Speaker 2: it did. But rather than being a terrifying loss, realizing
- 49:42Speaker 2: this might be the greatest psychological liberation possible, because if
- 49:45Speaker 2: you are not a fixed, heavy object, you might be
- 49:48Speaker 2: freer than you ever imagined. What if you stopped wasting
- 49:51Speaker 2: energy trying to protect the rigid concept of who you
- 49:53Speaker 2: think you are and instead lean entirely into the fluid,
- 49:56Speaker 2: interconnected process of what you are continuously becoming