Here is something you already know, somewhere.
You have had an experience — a dream that felt realer than waking, a moment of grief so sharp it seemed to exist outside your body, a morning where the light came through a window and something in you recognized it, though you couldn’t say what. Some internal event that made you feel certain there was more happening inside you than neurons firing.
And then you went looking for what science had to say about it.
If you searched long enough and honestly enough, you eventually found the edge — the place where the textbooks go quiet and the researchers start hedging. The place where confident language about “brain activity” and “neural correlates” starts to sound like someone describing the outside of a locked room and pretending they’ve been inside.
That edge has a name. Scientists call it the hard problem of consciousness.
Erik Hoel just admitted — publicly, in print, with his name on it — that the field studying it has failed.
Who Erik Hoel is, and why that matters
Hoel isn’t a philosopher on the outside of neuroscience lobbing criticism. He got his PhD at the University of Wisconsin working directly on Integrated Information Theory — one of the most mathematically serious attempts to explain consciousness ever developed. He was a postdoctoral researcher at Columbia. He held a faculty position at Tufts. He has done the work, from the inside, at the highest levels.
He also left academia to write full-time, which means he no longer needs to protect a research program or maintain relationships with funding bodies. That matters. Scientists in institutions have strong incentives not to say things like we have failed you. The people who say those things are usually the ones who have nothing left to protect.
Hoel has nothing left to protect. And what he said was: the field has not delivered. After decades of research, we still cannot explain why physical processes in the brain produce experience at all. We have better maps of the outside of the locked room. We do not have the key.
The hard problem, without the jargon
Let me put the actual problem plainly, because it tends to get buried under technical language.
When you see the color red, something happens in your brain. Photons hit your retina, signals fire, regions activate, information gets processed. All of that is, in principle, measurable and explainable. That’s what Chalmers called the easy problem — not because it’s easy, but because at least we know the kind of answer we’re looking for.
The hard problem is different.
The hard problem is: why does any of that processing feel like anything?
Why is there a redness to red? Why does grief feel like grief and not like nothing at all? Why is there an inside to your experience — a what-it’s-like-to-be-you — rather than just mechanisms running in the dark?
You can describe every electrical signal in the brain during a moment of seeing red. You can map every neuron that fires. And at the end of all that description, the question remains completely unanswered: why is there something it is like to see it?
That’s the gap. That’s what the field hasn’t closed. That’s what Hoel is admitting.
What he’s actually saying
Hoel’s argument is more specific than just “we don’t know.” It’s that the way the field has been structured makes genuine progress nearly impossible.
The competing theories — Integrated Information Theory, Global Workspace Theory, Higher-Order Theories, Predictive Processing — have spent decades accumulating followers and journal papers without anyone developing a clean way to test which one is right. Or whether any of them are right. They all explain some things. None of them explain why there is experience at all.
He has a method he thinks could force the issue — a way of stress-testing theories against each other using what he calls the substitution argument. The idea is this: if you can build two systems that behave identically but have completely different internal architectures, and your theory says one is conscious while the other isn’t, you’d better have a very clear reason why. If you don’t, your theory isn’t doing what you think it’s doing.
Most existing theories, put through that test, crack.
What’s left standing is a field that has produced an enormous amount of sophisticated-sounding work, and still cannot tell you, with any confidence, what consciousness is or where it comes from.
Why this matters to anyone who has felt it
There is a particular kind of frustration that comes from having an experience — a real, undeniable, interior experience — and then finding that the people whose job it is to explain such things essentially cannot.
You come off a meditation retreat and something has shifted. You sit with someone you love as they die and the room changes in a way you can’t account for. You smoke DMT and something is there, unmistakably, waiting. And you go looking for the science that might help you understand what happened, and you find researchers who will tell you about neural correlates and brain regions and have nothing — nothing at all — to say about the part that actually matters.
Hoel’s admission doesn’t solve any of that. What it does is confirm that the silence isn’t because the answer is known and you haven’t found it yet. The silence is because no one has the answer. The most rigorous, best-credentialed researchers in the field are working at the same edge you found when you went looking. They just have more sophisticated equipment for mapping the outside of the room.
This is not a reason to stop looking. It’s a reason to take seriously every other mode of inquiry — direct experience, contemplative practice, the reports of people who have been to the edge and come back — that mainstream science has spent a century dismissing.
If the official explanation doesn’t exist yet, the people who have been to the places official explanations can’t reach are not behind the curve.
They may be ahead of it.
Sources
- Hoel, E. (2026). We Consciousness Researchers Have Failed You. The Intrinsic Perspective.
- Hoel, E. (2023). The World Behind the World. Simon & Schuster.
- Hoel, E., Albantakis, L., Tononi, G. (2013). Quantifying causal emergence shows that macro can beat micro. PNAS.
Questions
Who is Erik Hoel?
Erik Hoel is a neuroscientist and research professor at Tufts University who got his PhD working on Integrated Information Theory — one of the leading scientific theories of consciousness — under Giulio Tononi, the theory's creator. He left academia to write full-time and runs The Intrinsic Perspective, a widely read Substack covering consciousness, emergence, and the philosophy of mind.
What is the hard problem of consciousness?
The hard problem, named by philosopher David Chalmers, is the question of why physical processes in the brain give rise to subjective experience at all. It's not asking how the brain processes information — that's the 'easy problem.' It's asking why any of that processing feels like anything from the inside. Why is there something it is like to be you? Science has not answered this. Most scientists privately admit they don't know where to begin.
What is Integrated Information Theory?
IIT is a theory developed by neuroscientist Giulio Tononi that tries to mathematically measure consciousness by calculating how much information a system integrates beyond its individual parts. The more integrated the information, the more conscious the system. It's one of the most mathematically serious theories in the field — and one of the most controversial. Hoel did his PhD working on it.
Why does it matter that a consciousness researcher is admitting failure?
Because the field has spent decades projecting confidence it didn't have. Billions in research funding, hundreds of papers, competing theories — and we are not meaningfully closer to explaining why any physical process produces subjective experience. Hoel admitting this publicly is significant because it comes from inside the field, not from a critic on the outside.