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The Mysterious Acoustics of the Etruscan Tombs · The Last Observer: Science and Beyond

• 0:00
  Speaker 1: Welcome to The Last Observer, a journey through science, history,
• 0:04
  Speaker 1: and the universe's greatest mysteries. From ancient enigmas to the
• 0:08
  Speaker 1: deepest questions at the frontiers of reality, we explore the discoveries, ideas,
• 0:13
  Speaker 1: and mysteries that challenge what we think we know. Stay curious,
• 0:18
  Speaker 1: keep questioning, and let's search for the truth beyond the known.
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  Speaker 2: Welcome to The Last Observer podcast. Today we will talk
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  Speaker 2: about how artificial intelligence and acoustic science are bringing a
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  Speaker 2: pair of Etruscan tombs, older than the Roman Empire, back
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  Speaker 2: to life as places you could almost walk through.
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  Speaker 3: I keep picturing a dark stairway and a painted wall
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  Speaker 3: that suddenly feels alive. Not a museum label, an actual
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  Speaker 3: room that does something to your body.
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  Speaker 2: That is the claim, and it is a careful one.
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  Speaker 2: On October 3rd, Scientific American published a piece by Jacqueline
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  Speaker 2: Ortaleva and Maurizio Forte about two painted tombs at Tarquinia
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  Speaker 2: in central Italy. The underlying study is in the Journal
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  Speaker 2: of Archaeological Method and Theory.
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  Speaker 3: Ortaleva is at Oxford. Forte is at Duke. They are
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  Speaker 3: not guessing from a photograph. They measured the rooms.
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  Speaker 1: Right.
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  Speaker 2: The tombs are 5th century before the Common Era, so
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  Speaker 2: roughly 2400 years old. One is the tomb of the rooster,
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  Speaker 2: Tomba del Gallo. The other is the tomb of the
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  Speaker 2: blue demons, Tomba dei Demoni Azuri.
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  Speaker 3: Blue demons. That name alone would get me down the stairs.
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  Speaker 2: The Etruscans were the people of Etruria, before Rome swallowed
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  Speaker 2: the region. They left us cities, temples, and an extraordinary
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  Speaker 2: cemetery landscape at Tarquinia, the Montorosi necropolis. The painted tombs
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  Speaker 2: there are famous for banquets, dancers, musicians, processions, and the afterlife.
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  Speaker 3: For a long time, the standard move was to treat
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  Speaker 3: those paintings like pages, decode the symbols, who is drinking,
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  Speaker 3: who is playing the double pipes, which figure is a demon.
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  Speaker 2: Forte and Ortaleva ask a different question. What did it
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  Speaker 2: feel like to enter? Not what does the picture mean
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  Speaker 2: in a catalog, but what happens to attention, sound, and
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  Speaker 2: balance when a living person walks in with a candle?
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  Speaker 3: And this is where the machines come Artificial intelligence is
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  Speaker 3: not inventing the ritual. It is helping map where a
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  Speaker 3: human eye might land and where a body might pause.
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  Speaker 2: They pair that with archaeoacoustics. You play a known sound,
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  Speaker 2: often a hand clap, at marked spots, and you record
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  Speaker 2: how the room answers. Decay time, echoes, whether speech stays
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  Speaker 2: clear or smears.
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  Speaker 3: A hand clap is a lovely scientific instrument. Cheap, repeatable,
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  Speaker 3: and full of frequencies.
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  Speaker 2: The work also sits inside two longer projects. Sounds of Silence,
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  Speaker 2: led from Oxford, has been listening to Etruscan tomb soundscapes.
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  Speaker 2: NeuroArtifact at Duke uses neuroscience and AI to think about
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  Speaker 2: how artifacts land in the mind.
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  Speaker 3: I want to be careful with that word, mind. They
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  Speaker 3: did not scan an ancient brain. They are borrowing modern
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  Speaker 3: ideas about attention as a framework, not as a mind-reading device. Yes.
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  Speaker 2: Hold that caution. We will come back to it, because
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  Speaker 2: the Blue Demon's tomb gets genuinely strange, and it is
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  Speaker 2: easy to over-claim.
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  Speaker 3: Give me the rooms first. I want the scale.
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  Speaker 2: Tomba del Gallo is the smaller one, dated about 450
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  Speaker 2: to 400 before the Common Era. A steep stair, then
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  Speaker 2: a chamber about 3.3 meters long and 2.5 meters wide.
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  Speaker 2: Call it 11 feet by 8.
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  Speaker 3: A large closet, basically. Two main paintings. banquet and dancers
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  Speaker 3: with double pipe players.
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  Speaker 2: The Blue Demon's Tomb is from a similar window, about
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  Speaker 2: 450 to 420. The chamber is much bigger, about 6.2
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  Speaker 2: meters by 6.1, 20 feet by 20. The entrance corridor
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  Speaker 2: is around twice as long and twice as wide.
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  Speaker 3: So one is intimate and the other is a hall.
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  Speaker 3: Same culture, same century, same necropolis, very different machines from
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  Speaker 3: the senses.
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  Speaker 2: Ortaleva writes that the first time she walked into the
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  Speaker 2: blue demon's tomb, the paintings seemed to confront her wherever
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  Speaker 2: she turned. Banqueters on the rear wall look unaware of
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  Speaker 2: demons crawling up the sidewall, as if those figures might
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  Speaker 2: step into the room.
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  Speaker 3: Except she was seeing that under modern LED light. The
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  Speaker 3: ancient visitor had beeswax and tallow candles, maybe incense, maybe
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  Speaker 3: a torch, though the researchers prefer candles in the model
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  Speaker 3: because a torch in a small underground room is a smoke.
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  Speaker 2: Dim light does two things at once. It limits where
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  Speaker 2: you can safely step, and it makes the painted figures flicker.
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  Speaker 2: A still image becomes a moving one if the flame moves.
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  Speaker 3: That is the theatrical part. They describe these tombs as
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  Speaker 3: transitional spaces between life and death, and as something closer
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  Speaker 3: to a staged experience than a storage room for a body.
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  Speaker 2: There is also a social argument. These were tombs for
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  Speaker 2: higher-status families— The team suggests some painted tombs stayed open
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  Speaker 2: through the year, reused for festivals, commemorations, and the worship
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  Speaker 2: of the dead. Architecture as a way to keep a
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  Speaker 2: clan's power in circulation.
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  Speaker 3: Power you can hear. I like that. Not a speech
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  Speaker 3: about status. A room that makes status felt.
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  Speaker 2: Before we go into the numbers, it helps to remember
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  Speaker 2: how young this whole method is. Archaeologists have measured caves
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  Speaker 2: and churches for decades. What is newer is stitching acoustics
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  Speaker 2: to three-dimensional models, computer vision, and simulated visitors.
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  Speaker 3: A little history of the machines then. Robot scientists and
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  Speaker 3: AI survey tools did not start in a tomb. They
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  Speaker 3: started with the boring dream of letting instruments repeat a
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  Speaker 3: measurement without getting tired.
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  Speaker 2: In the lab, that dream became robot scientists like Adam
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  Speaker 2: and Eve, systems that could choose an experiment and run it.
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  Speaker 2: In the field... It became drones, laser scanners, and now
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  Speaker 2: vision models that rank what is visually loud in a scene.
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  Speaker 3: None of that replaces the person on the stair. It
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  Speaker 3: changes what that person can compare. Two tombs, same toolkit,
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  Speaker 3: and suddenly the difference is not taste. It is measurable.
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  Speaker 2: So the question sitting in front of us is simple
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  Speaker 2: and a little haunting. Did Etruscan builders make one tomb
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  Speaker 2: for clear seeing and another for losing your bearings on purpose?
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  Speaker 3: I do not know yet. I want the clap measurements
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  Speaker 3: before I pick a side. All right, walk me through
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  Speaker 3: the method as if I am standing in the corridor
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  Speaker 3: with a recorder.
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  Speaker 2: They built detailed three-dimensional models of both tombs. Photogrammetry tools
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  Speaker 2: like Metashape turn overlapping photographs into a measurable room. Then
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  Speaker 2: they ran standardized acoustic surveys, recorded hand claps at different locations,
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  Speaker 2: and tracked how the sound decayed and traveled.
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  Speaker 3: Reverberation time is the headline number. How long until the
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  Speaker 3: sound drops away? A living room might be under a second.
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  Speaker 3: A huge stone church can hang on for several.
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  Speaker 2: They also cared about frequency. Low sounds, under about 1,000 hertz,
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  Speaker 2: and especially under a few hundred, do not behave like
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  Speaker 2: a voice in a quiet office. They wrap the room.
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  Speaker 2: You can feel them in the chest.
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  Speaker 3: The paper's line is strong. Sound behaves as a material force.
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  Speaker 3: Low-frequency sound is not only heard, it is bodily. vibration,
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  Speaker 3: disorientation may be a shift in how alert you are.
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  Speaker 2: That last step is interpretation. The measurement is the decay.
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  Speaker 2: The feeling is a hypothesis grounded in how human hearing
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  Speaker 2: and balance work.
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  Speaker 3: Now the visual side. This is the artificial intelligence piece
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  Speaker 3: people will remember.
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  Speaker 2: They used computer vision to build saliency maps. Saliency is
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  Speaker 2: a model's estimate of what pops. Color contrast, edges, unusual posture,
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  Speaker 2: a figure placed where the architecture already pulls the eye.
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  Speaker 3: So, the AI is not saying an Etruscan was afraid.
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  Speaker 3: It is saying, in this geometry and this palette, this
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  Speaker 3: region wins the competition for attention. Exactly.
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  Speaker 2: They also modeled likely movement routes and places where an
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  Speaker 2: action might cluster. A pause for an offering. A turn
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  Speaker 2: of the head. A threshold where the corridor becomes the chamber.
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  Speaker 3: Agent-based trajectories. Little simulated visitors walking the model under rules,
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  Speaker 3: not ghosts, just a way to test whether the architecture
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  Speaker 3: funnels people.
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  Speaker 2: And they lit the models with plausible candlelight using software
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  Speaker 2: such as Relux rather than museum floodlights. Candles over torches,
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  Speaker 2: because smoke in these volumes would have been rough.
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  Speaker 3: I keep thinking about the history of trying to automate looking.
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  Speaker 3: Early computer vision was terrible at a cluttered room. It
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  Speaker 3: liked a single object on a clean table. A painted
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  Speaker 3: tomb is the opposite problem. Flicker, damage, pigment loss, a
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  Speaker 3: figure half in shadow.
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  Speaker 2: Which is why the human still sets the question. The
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  Speaker 2: model ranks features. The archaeologist decides which ranking is meaningful
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  Speaker 2: next to a banquet scene or a demon.
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  Speaker 3: There is a longer robotics thread here that I do
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  Speaker 3: not want to skip. Ross King's robot scientist Adam, described
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  Speaker 3: in the 2000s, could form a hypothesis about yeast and
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  Speaker 3: run the test. Eve came later. aimed at drug discovery.
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  Speaker 3: Different field, same hunger. Close the loop between idea and measurement.
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  Speaker 2: Archaeology cannot always close that loop the same way. You
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  Speaker 2: do not get to rerun a 5th century funeral. What
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  Speaker 2: you can automate is the survey. Scan, listen, compare, simulate
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  Speaker 2: a path, then go back with a better question.
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  Speaker 3: So this study is a cousin of the self-driving lab,
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  Speaker 3: not a copy. The robots are virtual. The claps are real.
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  Speaker 2: Let us put the smaller tomb on the table, Tomba
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  Speaker 2: del Galo. The corridor is visually quiet, not much to
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  Speaker 2: look at, so you move forward. Once you are in
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  Speaker 2: the chamber, attention clusters at architectural transitions and at the paintings.
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  Speaker 3: Corners where walls meet become anchors. The authors link those
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  Speaker 3: anchors to small performances. A gesture, a directed gaze, a
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  Speaker 3: place to set an offering.
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  Speaker 2: Acoustically it is restrained. Reverberation is short. Most frequencies sit
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  Speaker 2: around one to one and a half seconds. Sound does
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  Speaker 2: not pile up. It leaks up and out of the space.
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  Speaker 3: Until you cross the threshold. At the bottom of the entrance,
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  Speaker 3: the behavior flips. Inside, the room supports clarity. You can
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  Speaker 3: hear speech. You can see the paintings. You know where
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  Speaker 3: you are.
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  Speaker 2: They connect that clarity, cautiously, with a mental state people
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  Speaker 2: study today as relaxed alertness. In brainwave language, alpha band activity,
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  Speaker 2: around 8 to 12 hertz, is associated with sustained visual
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  Speaker 2: attention and with tuning out noise.
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  Speaker 3: I want to flag on No electrode touched an Etruscan.
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  Speaker 3: This is a modern analogy. Useful if we remember it
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  Speaker 3: is an analogy. Agreed.
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  Speaker 2: The solid finding is the short decay and the orderly
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  Speaker 2: visual map. The alpha link is a way of saying
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  Speaker 2: the room seems built for looking, not for getting lost.
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  Speaker 3: A ceremonial room with good manners. Narrowing walls in the passage.
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  Speaker 3: A descending axis. Benches and niches cut into the architecture.
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  Speaker 3: The body is oriented before the pictures ask for anything.
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  Speaker 2: Ortoleva and Forte call that a liminal stage. You are
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  Speaker 2: not outside anymore, and you are not yet among the
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  Speaker 2: painted dead. The corridor does the introducing.
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  Speaker 3: Then the other tomb throws the manners out. I can
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  Speaker 3: feel us walking toward it.
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  Speaker 2: We should, because the contrast is the whole result. Same century,
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  Speaker 2: same hill of the dead. One room teaches you where
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  Speaker 2: to look, the other may be engineered or at least arranged.
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  Speaker 2: to take that certainty away. The Tomb of the Blue
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  Speaker 2: Demons plays a different game. Bigger chamber, longer corridor, and
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  Speaker 2: a painting program that includes a banquet, a procession, and
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  Speaker 2: a scene with multiple demons, a small boat, a woman,
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  Speaker 2: and a smaller male figure.
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  Speaker 3: In Etruscan imagery, demons are not cartoon villains. They are
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  Speaker 3: figures of passage, guides, threats, escorts into whatever comes after.
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  Speaker 2: The acoustic survey is the shock. In parts of the
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  Speaker 2: burial chamber, reverberation times are extraordinarily long. Some values sit
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  Speaker 2: in the range people measure in great cathedral interiors, including
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  Speaker 2: comparisons the researchers draw with St. Paul's in London.
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  Speaker 3: A tomb the size of a living room, ringing like
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  Speaker 3: a cathedral, that should not be possible, and yet the
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  Speaker 3: numbers are there.
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  Speaker 2: The strongest hang time is around the rear and left sides,
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  Speaker 2: where the banquet and procession are painted. At the rear wall,
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  Speaker 2: at 125 hertz and below, they recorded a reverberation time
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  Speaker 2: of 7.52 seconds.
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  Speaker 3: Seven and a half seconds. You clap and the room
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  Speaker 3: is still answering while you have time to turn your head,
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  Speaker 3: lose the source, and wonder if someone else just entered.
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  Speaker 2: Low frequency sound is especially slippery about location. It can
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  Speaker 2: feel like it comes from the walls themselves. Add drums, clappers,
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  Speaker 2: or voices? And speech can smear until words stop being words.
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  Speaker 3: And the boundary leaks. Speech made outside the chamber could
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  Speaker 3: be heard inside. Sound made inside traveled toward the exterior.
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  Speaker 3: Interior and exterior stop being clean categories.
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  Speaker 2: So a ritual sound does not stay in the room
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  Speaker 2: where it was made. It moves through the monument. That
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  Speaker 2: is a very different social machine from the rooster tomb,
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  Speaker 2: where sound mostly escapes and dies.
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  Speaker 3: Now put the demon in that sound. The saliency analysis
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  Speaker 3: flags the blue demon on the right wall as an
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  Speaker 3: extreme attention grab. Color, posture, and placement in the center
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  Speaker 3: of that wall.
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  Speaker 2: They call it a visual trap. Your gaze gets arrested.
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  Speaker 2: The figure is not politely waiting at the edge of
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  Speaker 2: a story. It takes the look.
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  Speaker 3: And the trap sits where the acoustics also shift. Visual
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  Speaker 3: surprise plus a room that will not tell you where
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  Speaker 3: the sound is. That is a designed coincidence, or a
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  Speaker 3: very lucky one.
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  Speaker 2: The authors sketch three stages. Near the entrance and the procession,
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  Speaker 2: the setting may still allow relatively calm observation. Turn toward
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  Speaker 2: the demon wall, and alertness spikes. Deeper in, at the
• 14:51
  Speaker 2: banquet zone, the long, low resonance may tip the visitor
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  Speaker 2: into something more immersed.
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  Speaker 3: They map those stages, again as a framework, onto beta
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  Speaker 3: and gamma activity for threat and arousal, and toward theta,
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  Speaker 3: like immersion farther in. 13 to 30 hertz for beta,
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  Speaker 3: above 30 for gamma. Theta is the slower band people
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  Speaker 3: sometimes link with deep absorption.
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  Speaker 2: I will say the cautious sentence out loud. This is
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  Speaker 2: not evidence that an Etruscan brain entered a trance. It
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  Speaker 2: is a model of sensory pressure. Darkness, low sound, visual shock,
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  Speaker 2: hard-to-locate echoes.
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  Speaker 3: Still, if I imagine candlelight on that blue figure while
• 15:33
  Speaker 3: a drum note hangs for seven seconds... I do not
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  Speaker 3: need a brain scan to believe the room was intense.
• 15:39
  Speaker 2: Incense and libations would have added smell. The scientific American
• 15:44
  Speaker 2: piece stacks the senses on purpose. Sound, flicker, scent, the
• 15:49
  Speaker 2: constraint of the dark on your feet.
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  Speaker 3: They compare the whole thing to a modern three-dimensional film.
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  Speaker 3: I get the impulse, and I also resist it. A
• 15:57
  Speaker 3: film is a picture of immersion. This was immersion with
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  Speaker 3: stone under your sandals and your family name on the line.
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  Speaker 1: Fair.
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  Speaker 2: The better comparison might be theater without a separate audience.
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  Speaker 2: You are in the set. The set answers when you speak.
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  Speaker 3: There is a finds story, too. Excavations in the entrance
• 16:16
  Speaker 3: corridor turned up animal remains from dogs, pigs, goats, and horses,
• 16:21
  Speaker 3: and signs that sacrifices or other cult activity happened in
• 16:24
  Speaker 3: more than one phase.
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  Speaker 2: At the same time, the researchers note no clear evidence
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  Speaker 2: of intact human burials in the chamber, and only limited
• 16:33
  Speaker 2: cremated human remains. The floor shows later changes, so maybe
• 16:37
  Speaker 2: this was not only a deposit for a body. Maybe
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  Speaker 2: it stayed a ritual room.
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  Speaker 3: They treat that as a hypothesis. I like that they do.
• 16:46
  Speaker 3: A weird acoustic room plus animal bone is not automatic
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  Speaker 3: proof of a cult theater. It is a reason to
• 16:52
  Speaker 3: look again.
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  Speaker 2: The contrast with the rooster tomb keeps the claim honest.
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  Speaker 2: Both have music and banqueting images. One is predominantly visual, ceremonial,
• 17:03
  Speaker 2: and controlled. The other is immersive and potentially destabilizing.
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  Speaker 3: So Etruscan funerary design was not one recipe. Families or
• 17:12
  Speaker 3: workshops or patrons may have wanted different relationships to the dead.
• 17:17
  Speaker 3: Order in one house, passage and overwhelm in another.
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  Speaker 2: Whether they wanted the overwhelm on purpose is the open door.
• 17:25
  Speaker 2: The authors leave intentionality unresolved. The seven-second tale might be
• 17:30
  Speaker 2: a plan. It might also be what you get when
• 17:32
  Speaker 2: you cut this volume in this rock and paint the
• 17:35
  Speaker 2: loud figure on the loud wall.
• 17:37
  Speaker 3: I can live with that uncertainty. A measurement can be
• 17:40
  Speaker 3: solid while the motive stays cloudy. That is most of history,
• 17:44
  Speaker 3: if we are honest.
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  Speaker 2: So where does this leave the older story of the Etruscans?
• 17:48
  Speaker 2: For a century, the painted tombs have been read as
• 17:51
  Speaker 2: art history, style, chronology, myth. This study does not throw
• 17:56
  Speaker 2: that out. It adds a layer the art history could
• 17:59
  Speaker 2: not hear.
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  Speaker 3: It also quietly revises funerary architecture around the Mediterranean. A
• 18:05
  Speaker 3: tomb is not only a container. It can be an instrument, spatial, acoustic, visual,
• 18:11
  Speaker 3: all tuned together, even if the builders would not have
• 18:14
  Speaker 3: used our words.
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  Speaker 2: The Etruscans already had a culture soaked in sound. Ritual
• 18:20
  Speaker 2: calendars that marked thunder, early musical instruments in the southern Mediterranean,
• 18:25
  Speaker 2: paintings full of pipes and dancers. Putting microphones in the
• 18:28
  Speaker 2: tombs is not a modern imposition. It meets them where
• 18:32
  Speaker 2: they already were.
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  Speaker 3: What the AI adds is comparison at a scale a
• 18:37
  Speaker 3: single visitor cannot hold. Saliency in one room versus saliency
• 18:41
  Speaker 3: in the other. A path that pauses. A path that
• 18:44
  Speaker 3: gets captured.
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  Speaker 2: I keep returning to the limit because it makes the
• 18:48
  Speaker 2: result better, not worse. The models use present-day rooms. Pigment
• 18:53
  Speaker 2: has faded. Floors have been altered. Our candles are a reconstruction.
• 18:57
  Speaker 2: Ancient ears grew up in those soundscapes and may have
• 19:00
  Speaker 2: expected the echo.
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  Speaker 3: Expectation matters. A cathedral echo shocks a tourist and comforts
• 19:07
  Speaker 3: a person who sings there every week. An Etruscan mourner
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  Speaker 3: might have heard the blue demon's tomb as correct, not
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  Speaker 3: as a special effect.
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  Speaker 1: Yes.
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  Speaker 2: Disorientation for us might have been recognition for them. The boat,
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  Speaker 2: the demon, the banquet of the dead, the room agreeing
• 19:24
  Speaker 2: with the story on the wall.
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  Speaker 3: The team is already pointing the same toolkit outward. Not
• 19:29
  Speaker 3: only interiors, exterior ritual landscapes in the southern Mediterranean and beyond.
• 19:35
  Speaker 3: If a tomb can be a transitional space, so can
• 19:37
  Speaker 3: a path, a terrace, a place where thunder was supposed
• 19:40
  Speaker 3: to mean something.
• 19:42
  Speaker 2: That is the robotics and AI history I actually care
• 19:45
  Speaker 2: about here. Not a machine that replaces the archaeologist. A
• 19:49
  Speaker 2: chain of instruments from the first robot scientists in biology
• 19:53
  Speaker 2: labs to scanners and vision models that lets a human
• 19:57
  Speaker 2: ask a sensory question and get a number back.
• 20:00
  Speaker 3: And the number that stays with me is 7.52 seconds
• 20:04
  Speaker 3: at the low end on the banquet wall, next to
• 20:07
  Speaker 3: one and a half seconds in the rooster tomb, Same culture,
• 20:11
  Speaker 3: wildly different aftertaste.
• 20:13
  Speaker 2: The other number is the demon as the peak of
• 20:16
  Speaker 2: the saliency map. Color doing the work that a spotlight
• 20:19
  Speaker 2: would do now. Blue in a world of earth pigments
• 20:22
  Speaker 2: and flame.
• 20:24
  Speaker 3: If I were skeptical in a review, I would ask
• 20:26
  Speaker 3: for more tombs before anyone says the Etruscans had two
• 20:29
  Speaker 3: schools of sensory design. Two cases can show a difference.
• 20:34
  Speaker 3: They cannot yet show a pattern.
• 20:36
  Speaker 2: The authors say that themselves. More acoustic surveys at Tarquinia
• 20:40
  Speaker 2: are the next measurement, not a slogan. Intentionality stays open
• 20:45
  Speaker 2: until those rooms are clapped and mapped too.
• 20:48
  Speaker 3: I also want the animal bone handled gently. Dogs, pigs, goats,
• 20:53
  Speaker 3: horses in the corridor are intriguing. They are not a script.
• 20:57
  Speaker 3: Ritual rubbish and ritual theater can look similar in the ground.
• 21:01
  Speaker 2: Still, the absence of a clear intact burial, plus repeated activity,
• 21:06
  Speaker 2: plus this acoustic profile, makes the commemorative room idea hard
• 21:10
  Speaker 2: to shrug off. A place you return to, not only
• 21:13
  Speaker 2: a place you seal.
• 21:15
  Speaker 3: What I love is how ordinary the tools are once
• 21:17
  Speaker 3: you say them plainly. Clap, record, model the stone, ask
• 21:22
  Speaker 3: a vision system what shouts, light it with a candle,
• 21:25
  Speaker 3: not a lamp, then stand in the difference.
• 21:29
  Speaker 2: Ordinary tools, extraordinary rooms. A narrowing passage that settles the body.
• 21:35
  Speaker 2: A blue figure that seizes the eye. a low note
• 21:38
  Speaker 2: that refuses to die, long enough that the boundary between
• 21:41
  Speaker 2: the corridor and the dead starts to blur.
• 21:44
  Speaker 3: If the builders meant that, they were extraordinary engineers of feeling.
• 21:48
  Speaker 3: If they did not mean it, the stone still did it,
• 21:51
  Speaker 3: and people still walked through it. Either way, the living
• 21:54
  Speaker 3: were part of the design.
• 21:56
  Speaker 2: That is the story Scientific American put in front of
• 21:59
  Speaker 2: us on October 3rd. Two 5th century tombs at Tarquinia,
• 22:04
  Speaker 2: measured again with acoustics and multimodal AI, until a burial
• 22:08
  Speaker 2: chamber starts to behave like a performance.
• 22:11
  Speaker 3: I will be thinking about that rear wall for a while.
• 22:14
  Speaker 3: Seven seconds of banquet and a demon waiting on the turn.
• 22:18
  Speaker 2: And about how much of the ancient world we have
• 22:21
  Speaker 2: studied in silence, under lights the builders never had. Thanks
• 22:25
  Speaker 2: for listening to the Last Observer podcast.
• 22:28
  Speaker 3: Go carefully down the stairs.