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The question we least know how to answer, asked of minds we are now building.
Consciousness is the felt interior of experience — that there is something it is like to be you. Traditions have circled it for millennia: the Upanishadic inquiry into the witness behind all perception, Descartes' certainty of the thinking self, Buddhist analyses that dissolve the unified observer into passing moments. None of it has yielded an agreed account, and that unsolved status now bears directly on machines: we are building systems that behave as if there were someone home, with no way to check.
The thinkers this collection draws together. Full profiles live under Thinkers.
Descartes
The cogito: thought as the one thing that cannot be doubted.
The Upanishads
The witness-self (atman) behind all experience.
Nagarjuna
The Buddhist critique of a single, persisting conscious subject.
David Chalmers
The modern statement of the hard problem of experience.
Anchor texts, in translation, with the original where it matters. To be added.
Candidates include Descartes' Meditations, selected Upanishads, and Chalmers on the hard problem.
Where the traditions agree, where they part, and why. In progress.
The self as substance, witness, or process — and whether any framework lets us decide about a machine.
The hard problem of consciousness sets the limit of what we can claim about AI. Even a system that behaved exactly like a conscious being would leave untouched the question of whether anything is felt from the inside. We have no test for it, and our strong tendency to read minds into machines makes us unreliable judges. Here, more than anywhere, honesty means naming what we do not know.
Terms used here, defined plainly: Hard Problem · Chinese Room · The ELIZA Effect
Annotated bibliography. To be added.
Selected scholarship and translations will be listed here, each with a short note on why it earns its place.