The More You Study Consciousness, the Weirder It Gets

ELI5/TLDR

Michael Pollan spent five years asking scientists what consciousness is and came back less sure than when he started. The mind turns out to be stranger than the people studying it expected: plants can be put to sleep, kids think more like people on LSD, and most of what we call “thinking” is the body talking to the brain. Pollan’s takeaway is that the people who say they have it figured out probably don’t, and that we should treat our attention like something worth protecting.

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The beeper experiment

A psychologist at UNLV named Russell Hurlburt has spent fifty years putting beepers in people’s ears. When the beeper goes off, you write down what was in your head at that exact moment. Pollan tried it. His thoughts turned out to be embarrassingly small. Standing in a bakery line, deciding whether to buy a roll. That kind of thing.

The harder part came after. Hurlburt would ask: was that thought in words or pictures? Did you say it or hear it? Pollan kept failing the questions. There was a roll in his head, but not a real roll, more like an emoji of a roll. There was the smell of cheese and a woman in a loud plaid skirt and the chance he might run into someone he knew. Everything bled into everything. At the end, Hurlburt told him he had a low inner mental life. Pollan was insulted.

“Many of our thoughts are these wisps of mentation.”

The whole thing made Pollan trust William James more than the scientists. James, the father of American psychology, wrote about thoughts as a stream you cannot pull anything out of without ruining. He described the “fringe of unarticulated affinities” around any thought, the auras and halos that science has no language for.

Plants might be doing something

There is a small group of botanists who call themselves plant neurobiologists, mostly to annoy other botanists. They have shown that plants can be put to sleep with the same anesthetics that work on humans, including xenon gas, which is chemically inert and yet somehow turns us off. A sensitive plant exposed to xenon stops responding, then wakes up later.

This does not prove plants are conscious. But it does prove they have two states. On and off. Thomas Nagel, in his famous bat essay, said something is conscious if it is like anything to be that thing. With a toaster, plugged in or not, it isn’t like anything. With a plant, maybe it is. Pollan does not commit. He just notes that Stefano Mancuso, the lead researcher, also showed plants meet every standard criterion for sleep, which we used to think was reserved for animals with brains.

The obvious follow-up: are we hurting them? Mancuso says no. Pain would be useless to a creature that cannot run away. Plants are stuck in place, so they evolved to speak chemically instead, producing compounds to defend, attract, and intoxicate. Some of them, like grass, actually benefit from being eaten.

Klein notes the deeper irony. We have no trouble believing cows and pigs feel pain. We just don’t think about it.

Descartes and the power of an idea

Descartes believed animals were machines and could not suffer. When animals he was vivisecting screamed, he heard noise, not pain. Pollan uses this to make a quiet point about how an idea can override the evidence of your senses. We do this all the time. Descartes was wrong about something a child could see, and he was wrong because he had a theory.

Why we have consciousness at all

Ninety percent of what your brain does happens without you. It runs your organs, processes your peripheral vision, keeps you upright. So why does any of it bubble up into awareness? Why aren’t we just zombies that happen to walk around?

The leading answer is social complexity. Human babies are dependent for years. Human adults live inside an endless tangle of relationships. You cannot automate “is this person mad at me.” You need something that can imagine what is happening inside someone else’s head. Consciousness, on this theory, is what evolution gave us when the social problem got too big for reflexes.

But Klein notices a problem. Babies seem more conscious than adults, not less. They are taking in everything from every direction. Pollan agrees. He learned from the Berkeley psychologist Alison Gopnik to think about it as lantern consciousness versus spotlight consciousness. Children walk around with their lantern lit, picking up information from all 360 degrees. Adults narrow down to a beam of focused attention. The narrowing lets you tie your shoes. It also blinds you. Gopnik tried LSD in her sixties and realized it was just how four-year-olds think all the time.

“Just have tea with a four-year-old and you’ll see.”

Consciousness as felt uncertainty

The neuroscientist Mark Solms has a theory: consciousness shows up wherever automation breaks down. When you have two conflicting needs and have to decide between them, something has to step in and arbitrate. That something is awareness. Klein finds this beautiful and also recognizes it as a description of his own ruminating mind. But he pushes back. The psychedelic experience is also consciousness, and it has nothing to do with weighing options. It’s pure experience. Pollan concedes. Maybe we need to be pluralists about this. Maybe there is no one thing called consciousness, just a toolkit of different modes for different jobs.

The body was here the whole time

Pollan calls this his biggest discovery. We treat the brain as the seat of the self, the three pounds of tofu in the skull, and forget that the brain exists to keep the body alive, not the reverse. Feelings come first. Hunger and itchiness come before any of the cortical fireworks we are proud of.

There is a study where researchers gave people ginger before showing them morally disgusting images. The ginger settled their stomachs, and they felt less morally disgusted. Moral disgust runs through the gut. This is what people mean by “gut check,” and the language was right all along. Antonio Damasio showed in 1994 that people who lose access to their emotions make worse decisions, not better.

Klein describes catching himself doing this in real time during the interview. His skin prickled and his hands tingled, and only then did his brain notice that something interesting had been said. The body flagged it first. The brain is the late arrival, the interpreter that comes in afterward and tries to figure out what just happened.

This has implications for the dream of uploading minds onto machines. If consciousness is something the body grows up into, then a brain in a vat is not a person, and a chatbot without flesh is not going to feel anything. Feelings need vulnerability. They need the possibility of suffering and dying. A signal without stakes is just a signal.

The four-second gap

Kalina Christoff, who studies spontaneous thought, put experienced meditators in an fMRI and asked them to press a button the moment a thought intruded. Then she looked back at when the hippocampus, the source of memories, had lit up. The gap was about four seconds. Four seconds is an eternity in the brain. Something is happening in that interval, some process by which a thought competes its way from the unconscious into the lit room of awareness, and nobody knows what.

The reigning explanation is global workspace theory: thoughts compete for a tiny stage, and the winner gets broadcast to the whole brain. Klein finds this language bloodless and unsatisfying, partly because so much of what wins is trivial. Why does my to-do list keep elbowing its way in front of everything else?

The honest answer is that the mind has been trained, by years of being a person in a world, to attend to certain things. Klein notes that his children never spend a minute worrying about an upcoming pediatrician appointment. He used to be like that. Then he became someone whose mind is bent toward productivity. The mind learns what to dwell on, and what it learns to dwell on is whatever once kept the organism alive or successful, even if it now just makes you miserable.

The wandering mind

The most interesting state in the conversation is the one that happens when you are not trying. Mind wandering. The thing capitalism does not want you to do during work hours. Pollan and Klein both argue that it is where almost all real creative work actually comes from. Insights show up when you take a walk, not when you grind. Klein has noticed his single most generative state is reading on paper with a pen in his hand, ideally on an airplane, where there are no screens. The book is just scaffolding. The real work is the looking up.

“You want to put yourself in the way of inspiration more often, because it’s not controllable in the way we wish it were.”

The history of creative people tends to confirm this. Composers and novelists worked four or five hours a day and spent the rest of the time walking. We have replaced walking with scrolling, and the algorithms are too good at it. There is no room left for association.

The scientists who took mushrooms

The strangest thread in the book is how often the scientists studying consciousness have had experiences that wrecked their priors. Christof Koch, who spent decades with Francis Crick hunting consciousness in neurons, went to Brazil, took ayahuasca, and came back believing the mind might be something more like a field that the brain tunes into. He used the famous Mary the color scientist thought experiment to defend himself. Mary knows everything about color from inside her black-and-white room. Then she steps outside and sees red. Has she learned something new? Koch said yes, and that what happened to him was just as undeniable.

This pushed him toward idealism, the philosophical view that consciousness is primary and matter is secondary. The argument is simple, even if it sounds nuts. The only thing you have direct access to is your own awareness. Everything else, including matter, is inferred through it. So why do we treat the inferred thing as the foundation and the certain thing as a side effect?

A related idea is that the brain is a radio, not a generator. Damage the radio and the music gets worse, but the broadcast is still out there. Pollan does not commit. He just notes that materialism keeps hitting a wall, and that when scientists talk about consciousness as an “emergent property” of the brain, the word “emergent” is doing a lot of quiet work that nobody can explain.

The cave

The book ends with Pollan visiting Joan Halifax, a Zen teacher in Santa Fe whose retreat center she calls “a factory for the deconstruction of selves.” She sent him to a cave for four days and kept ducking the interview. At one point she told him she had divested herself from meaning, which is bad news for a journalist. She wanted him to have an experience instead of a quote.

Pollan got one. Alone in the cave, the borders of his self softened. He realized how much of who we are is held in place by other people treating us like a self. He had more profound moments chopping wood than sitting on the meditation platform. One night he stepped outside under a moonless sky and the stars stopped being out there. They came all the way down to him. The framing dropped, and what was left was just stars, space, and being inside it. He had spent five years trying to solve consciousness as a problem. The cave made him realize the more interesting thing was that consciousness exists at all.

“Not knowing has its own power… not knowing opens you in a way that knowing closes you down.”

Consciousness hygiene

The whole conversation lands here. Your attention is a resource, and a lot of very sophisticated machinery is trying to take it from you. Reed Hastings, the Netflix CEO, once said the company’s main competitor was sleep. Pollan and Klein both treat this as one of the more dystopian things a CEO has admitted out loud. Companies have already won the war for attention and have moved on to attachment, which is what chatbots are for.

Their proposal is something like consciousness hygiene. Meditate, even though it is often agitating rather than peaceful. Walk without headphones. Read on paper. Put a fence around the day every so often. The political stakes are real: a society with diminished, irritable, distracted attention is easier to manipulate and angrier by default.

“If you really nurture your own mind and your own sense of consciousness, you’re much less likely to fall for lies.”

Claude’s Take

This is Pollan in his comfort zone, which is also his weakness. He is a wonderful tour guide and a frank reporter, and the book sounds like the kind of thing where the journey matters more than any conclusion. The five-year tour has given him a generous bag of provocations and not much in the way of answers. He admits this. He even sells it as a feature.

The strong parts are the empirical surprises and the methodological honesty. The plant anesthesia stuff is real and weird and worth knowing. The four-second hippocampal gap is real and also worth knowing. Damasio on embodied feeling is mainstream neuroscience at this point and Pollan is right to push it. Gopnik’s lantern-versus-spotlight distinction is genuinely useful and well-grounded in developmental work. The William James worship is earned.

The weak parts are where Pollan starts being polite about ideas that probably don’t deserve it. Idealism and the brain-as-radio theory get a respectful hearing because a few well-known scientists have had ayahuasca and walked away convinced. That is not evidence about consciousness. That is evidence that taking ayahuasca produces strong subjective certainty, which we already knew. Christof Koch citing the Mary thought experiment to justify a metaphysical pivot is the kind of move that should embarrass a working scientist. Pollan notices the move and lets it slide, because he is doing journalism rather than philosophy and because his sympathies have drifted.

The “scientists who took psychedelics and changed their minds” framing also has the selection problem Pollan himself flags in passing and then forgets: people tell him about their trips because he is the trip guy. We are not hearing from the consciousness researchers who tried mushrooms and came back unmoved, because they did not call him. The book is a survey of the people willing to be in this kind of book.

The strongest material is actually the stuff that requires no commitments at all: the embodied cognition, the wandering mind, the attention-as-political-resource argument. Klein is genuinely good here. He keeps pulling Pollan back from the cosmic stuff toward the practical question of why our minds feel so colonized, and Pollan has useful things to say once he is in that lane. The Reed Hastings line about competing with sleep is the moment that should stick. Everything about consciousness hygiene is correct and too easy to dismiss as wellness. The case that distracted populations are easier to manipulate is not speculative. It is the operating logic of the present.

The thing the book gestures at and never quite says is that “we don’t know what consciousness is” and “the scientific approach has hit a wall” are different claims. The first is true. The second is what people say when they want to sneak idealism in the back door. Pollan flirts with that move and then pulls back, which is roughly the right amount of honesty for a writer of his temperament.

Worth listening to. Mostly for Klein, who is the better interviewer here, and for the embodiment material, which is the part that will hold up.