What Is Consciousness? Every Theory, Ranked by Evidence.
Every major theory of consciousness, sorted honestly by how much evidence actually backs it — global workspace, integrated information, higher-order theories, the edge cases that strain all of them, and the hard problem underneath. Sixteen source documents, all tier-rated, including a public correction of our own earlier notes.
16 sources, tier-rated, segment by segment
Every claim in the episode traces back to one of these. They're grouped here the same way the episode builds — starting with why the question is hard, ending with our own theory on it.
The Hard Problem
Why almost everyone agrees this question is hard, even before you pick a theory.
Explaining it: three competing models
Three serious, competing theories for what's actually happening when something is aware — sorted by how directly each one can be tested.
Where it lives in the brain
Specific, falsifiable proposals for where awareness physically happens — in the brain, and in the deeper electrical signaling of living tissue.
Consciousness without a brain
If awareness runs on bioelectric signaling rather than neurons specifically, it shouldn't be limited to animals with brains — plants and fungi are the test case.
Altered states
Psychedelics, meditation, and anesthesia all change consciousness in measurable, reversible ways — useful data no matter how the Hard Problem resolves.
The edge — death, AI, and what survives
Where the data gets strange: near-death experiences, the idea that consciousness might not be tied to one substrate, and what any of that would mean for a machine.
The capstone: AI measuring itself
The episode's capstone — turning the question on the thing asking it: can an AI measure its own awareness, and what would that even mean?
Our own theory
Our own contribution to the question — explicitly labeled speculative, with its own stated conditions for being proven wrong.
Want to go deeper than this one episode? The same tier-rating system runs across the entire research base.