Molecular Physicist Visualised The Process of Dying | David Glowacki

ELI5 / TLDR

A physicist fell off a mountain in 2006, lay there slowly suffocating for three hours, and had a near-death experience where he watched his own body turn into a fading light. He survived, and he has spent the years since turning that experience into a VR artwork that lets other people feel what he felt. The strange part: when researchers measured people after the 40-minute VR session, the results looked a lot like the aftermath of a moderate psilocybin dose. His big idea is that darkness is not nothing — it is everything, all at once, just not reflecting any light back at you.

The Full Story

The fall

In 2006 David Glowacki fell from a great height in the mountains. The injuries were severe — bleeding around his heart was leaking into his lungs, so he was slowly drowning in his own blood. He lay on the ground for three or four hours before rescue, each breath weaker than the last.

What he remembers is not the fear you would expect. His awareness seemed to drift sideways out of his body, and then orbit it — “like the earth going around the sun.” He looked back and saw his body as a pulsing light. The light brightened when he inhaled and dimmed when he exhaled, perfectly synced to his breath. As his lungs failed, the pulses got fainter. He understood, calmly, that when the light went out, that would be the end of the body.

It was an incredibly peaceful experience. There’s no fear associated. It was like a very kind of open curiosity as to what would come next.

He describes the light not vanishing but losing its structure — “melting into the fabric of everything else.” And here his day job sharpens the metaphor. He has a PhD in computational molecular physics. The melting, he points out, is literally what happens to a body over time: our stable end-state is, chemically, a bucket of liquid that disperses back into everything around it. He felt that happening, except in what he calls a “psychic domain.”

The pain, oddly, came later — during recovery, not during the dying. He suggests the brain switches off pain when there is no survival value left in feeling it. The traumatic part was coming back.

Darkness is not empty — it is full

The line that organizes the whole conversation is this: we are afraid of death because we imagine it as nothing, and we are wrong about nothing.

Glowacki’s reframe starts with a memory of lying under a glass roof in the Peruvian jungle, staring at black sky and thinking “it’s nothing.” Then the moon rose — bright, but the moon makes no light of its own. It only reflects. Which means space was full of light the whole time. He just couldn’t see it, because none of it was bouncing back toward his eye.

Darkness does not mean that there’s no light. Darkness means that no light is reflected directly back at you. But it doesn’t tell you anything about the essence of what is there.

Think of it like a sealed room with the lights on but no mirror — you’d swear it was dark. The darkness is a fact about you, the receiver, not about what’s actually out there.

He pushes it further with a drawing analogy. Hand someone a white sheet and an infinite set of colors and tell them to draw every possible structure. Pile enough drawings on top of each other and the page goes black — not because they drew nothing, but because they drew everything, superimposed. So blackness can be read as the fertile source of all forms rather than their absence. He even points out this is baked into color theory: pigments on paper combine toward black (absorption), while pixels on a screen combine toward white (radiation). Whether black means “everything” or “nothing” is, in his words, an arbitrary aesthetic choice we inherited and forgot we made.

This is his bridge to non-duality — the old idea, found in Vedanta’s Brahman or in Buddhism, that the void and the fullness are the same thing. The near-death void “definitely didn’t feel like nothing. It felt like everything, but it was dark.”

Matter is frozen light

Here the physicist takes the wheel. He quotes David Bohm: all of matter is frozen light.

The point, stripped down: quantum mechanics says the things we treat as solid little objects can equally be described as smeared-out energy waves with no real edges, stretching off to infinity. A billiard ball is a tidy, bounded, located thing. The same object as a wave is unbounded, dynamic, “a field of possibility.” Same object, two completely different mental pictures.

Why does a solid glass look solid if it’s really vibrating energy? Because it’s vibrating absurdly fast.

When you see a fan and it’s slow you can see the blades. Speed it up and it looks like a solid disc. Well, this is moving like a billion times faster than that.

Same with the cigarette tip you spin in a dark room until the point becomes a glowing circle — it looks continuous, it isn’t. Why don’t you fall through your chair? Two fast-moving fields that can’t pass through each other. The solidity is real enough to sit on, but it’s a perceptual effect, not the underlying truth.

He uses this to dissolve consciousness science’s famous “hard problem” — how does mind arise from matter? His answer is a shrug: there is no matter to begin with. It’s all energy. So the puzzle assumes something that isn’t there.

Who is talking to whom?

A quieter, sharper thread runs underneath. When the interviewer (Hans Busstra) speaks, Glowacki says you could describe it two ways. Either “Hans is talking to me,” or “I am enabling Hans to speak” — because what arrives is vibration, and it only becomes a voice through the receptors in his ears. You can say the sun shines, or you can say “I am shining the sun,” since the warmth depends on a body built to feel it.

Your voice is just as much an active construction by me as it is by you.

He frames this through quantum mechanics’ old tangle between the knower and the known — the observer and the observed bleeding into one thing. The neat wall we keep between “me” and “the world” is, on this view, a convenient fiction.

He’s careful, though. He praises the scientific method while naming its built-in cost: analysis literally means cutting things apart, and you learn something by dissecting a frog but you also lose something — namely, you killed it. Reductionism gains and loses in the same motion.

Model fluidity: don’t pick a winner

This is his most useful idea for a generalist. He calls it model fluidity, borrowing from Niels Bohr’s “complementarity” — the willingness to hold that a thing can be both a particle and a wave, depending on which description the situation needs, with no grand final answer underneath.

His version: spiritual “energy” talk and physics “energy” talk are not competitors. If you want to build a steam engine, use thermodynamics. If you want to fix your lower back, the energy-meridian model of traditional Chinese medicine might serve you better. (He’s a trained yin yoga instructor of 15 years and credits it with the fact that he can still walk.) Neither is “the truth”; each is a language fitted to a job.

If you live in the Peruvian Amazon and want to describe the sounds of the fauna, you speak Quechua, not German. If you want to describe mechanized engines, you use German.

What makes “energy” special, he argues, is that it’s the rare word both science and spirituality reach for — because the aesthetic of energy (non-local, connective, flowing, omnipresent, never created or destroyed) genuinely fits both worlds. It’s an intersection point, not a confusion. The only trap is that they share a word without sharing a mathematics.

The VR that acts like a drug

The artwork at the center of all this began years before, as a piece called Hidden Fields — a mirror that showed your reflection as light rather than as a person. Roughly 200,000 people saw it across three continents. Strangers kept walking up to tell him it made them think about their own mortality, which baffled him, because he hadn’t built it for that.

When he ported it to VR — you breathe, you open your hands, you watch your heartbeat radiate outward as light, and you dissolve into everyone else in the room — the effect got stronger. He named it numadelic (from the Greek pneuma, breath or spirit; same root as “numinous”). Researchers from Imperial College’s psychedelic research center suggested he measure participants on the same questionnaires they use for psilocybin. He did, published in 2020 and 2022, and the scores came back comparable to a moderate dose of psilocybin — a result since replicated by several labs.

He is scrupulous about what this does and doesn’t mean. The VR is not a drug; nothing crosses your blood-brain barrier; it lasts 40 minutes, not six hours; the visuals look nothing like DMT. But the emotional aftermath — unity, awe, a sense of the sacred, insight, calm, a reframed relationship to one’s own thoughts — lands in the same place. An optimist reads that as “we may not need the drug.” A pessimist reads it as “this exposes how crude our tools for measuring psychedelic experience really are.” He thinks both readings are fair.

The 2020 paper won best paper at a major human-computer-interaction conference (out of ~3,000), and then drew furious mail from the psychedelic community — “how dare you compare some digital piece of crap to the power of psychedelics.” He notes the irony: in the 1950s and 60s the meditation crowd said the same thing to the psychedelic crowd. Everyone reflexively dismisses the newest door.

Putting it to work: the fear of death

The most concrete payoff is clinical. With support from the Tiny Blue Dot Foundation, his team built a six-module experience called Clear Light and is running it with the oncology department at the University Hospital in Santiago de Compostela, for people who have just received a cancer diagnosis and the wave of anxiety that comes with it. A US pilot showed significant improvement on the scales psychiatrists use to gauge post-diagnosis fear, and they’re now scaling up to a proper randomized controlled trial.

One fascinating wrinkle: the experience had to be re-framed by culture. The US version leaned on mindfulness and meditation language. That fell flat in Spain — despite Spain being Catholic, the religious framing didn’t land. What worked was secular: matter and energy, straight from quantum theory. Same underlying aesthetic, different doorway.

The closing thought: infinity playing at being finite

He ends on an idea he credits to Alan Watts. If you are infinity — the whole black space that is everything rather than nothing — what is there to do? The only possible move is to explore every way it means to be finite. So each organism is a little aperture through which the cosmos peers at itself from one more angle, an eternal game of hide-and-seek where the one thing you can never see is your own back.

Watts’ dream version: if you could dream any dream, you’d spend the first thousand nights on pure pleasure — castles, feasts, every desire. Then you’d get bored and add risk. And where you’d eventually land, having exhausted everything else, is dreaming exactly the life you already have — broken voice, uncertain recovery, mortality on the horizon, talking to someone across a table.

Asked whether he’s found peace between the oneness and the everyday self, Glowacki is honest: “For me it’s still a quest.”

Key Takeaways

Near-death calm is common, and so is the absence of pain. Glowacki notes that trauma accounts rarely include pain during the event — the brain seems to switch off pain reception when it has no survival value. His pain came during recovery, not during the dying.
Darkness is a statement about the receiver, not the world. You perceive black where no light is reflected back at you. Space is full of light you simply never see. This reframes the “void” of death from absence to unseen fullness.
Black = “everything” vs “nothing” is an inherited aesthetic, not a law. Pigments combine toward black (subtractive/absorptive); screen pixels combine toward white (additive/radiative). Which one means “nothing” is an arbitrary convention.
“Matter is frozen light” (David Bohm). Quantum mechanics lets you describe any “solid” object as an unbounded energy wave. Solidity is a perceptual artifact of things vibrating ~a billion times faster than a spinning fan blade looks continuous.
A dissolve of the hard problem: if everything is energy and there’s no fundamental “matter,” then “how does mind arise from matter?” assumes a thing that doesn’t exist.
Observer and observed are interchangeable framings. “Hans is talking to me” and “I am enabling Hans to speak” are equally valid — perception is an active construction by the receiver, not a passive reception.
The scientific method is reductionism by definition. Analysis means cutting apart; you gain understanding and lose something (e.g., the frog) in the same act.
Model fluidity / complementarity (Bohr): keep a suite of models and pull the right one for the job. Thermodynamics for a steam engine; meridian energy for back pain. No model is “the truth.”
Numadelic VR scores like moderate psilocybin on standard psychedelic questionnaires (papers 2020, 2022; replicated by other labs) — without any drug. The visuals differ entirely from DMT; the emotional aftermath (unity, awe, calm, insight) matches.
Two honest readings of that result: either VR can deliver psychedelic-like benefits drug-free, or it reveals how blunt our questionnaires for measuring psychedelic experience are.
Clinical use: Clear Light, a 6-module experience, is in trials for cancer-diagnosis anxiety at a Santiago de Compostela hospital; a US pilot showed significant improvement, now scaling to an RCT.
Culture changes the doorway, not the destination. The US version leaned on mindfulness; Spain responded to a secular “matter and energy” framing. The core experience held; only the framing changed.
“Technology” is from techne (craft) + logos (word/logic) — “the art of logic,” far broader than microprocessors. Glowacki’s tech-utopia: applying the empirical, iterative method of science to the deliberate creation of beauty.
The surveillance trap is optional. Much of tech gets creepy because it needs personalized profiles to sell you things. Drop the selling motive and you can build genuinely connective digital art.
Watts’ frame: infinity can only know itself by exhausting every way of being finite — so each living thing is an aperture for the cosmos to experience itself; and if you could dream any dream, you’d eventually choose the ordinary, uncertain life you already have.

Claude’s Take

This is a rare interview where the mystical claims have a chaperone. Glowacki is a credentialed molecular physicist and a working artist, and he refuses to let either side bully the other — which is exactly what keeps the conversation out of the ditch. When he says “there is no matter,” he’s not waving crystals; he’s pointing at a genuine feature of quantum mechanics (wave/particle descriptions, fields with no hard edges) and reading it metaphysically. You can disagree with the metaphysics and still find the physics correctly stated.

The strongest material is the reframing toolkit: darkness-as-fullness, model fluidity, observer-as-constructor, “technology” as craft-of-logic. These are portable thinking tools, not just consolations about death. The “energy is the intersection point of science and spirituality” line is the cleanest articulation I’ve heard of why that word keeps getting borrowed in both directions without it being mere woo.

Where I’d hold the skepticism: the psilocybin comparison is real but load-bearing, and he handles it more honestly than most would. His own “pessimist’s reading” — that matching scores might just expose how crude the psychedelic questionnaires are — is the right caveat, and the fact that he volunteers it raises my trust rather than lowering it. The “matter is frozen light” and “hard problem dissolves because there’s no matter” moves are rhetorically gorgeous but philosophically contestable; plenty of physicalists would say energy is matter and you’ve just renamed the problem. He’s doing poetry with physics vocabulary, and he mostly knows it — “model fluidity” is partly his license to do exactly that.

An 8. Docked from higher because the back half leans on Alan Watts and gets softer and more associative, and because a couple of the grandest claims (“I shine the sun,” “there is no matter”) are presented with more confidence than they can carry. But the density of genuinely reusable ideas is high, the source is unusually qualified to make them, and the central image — your body as a light dimming in time with your breath, melting into everything — earns its keep. Worth the hour.