Lexicon
The Substrate Demand
The modal demand relocated from structure to substrate: the conviction that a system with all the right structures would still lack experience because its substrate is not biological.
Refusing the demand for a non-structural explanation at the level of structure does not refuse it everywhere; the demand can retreat. The substrate demand is its most prominent hiding place: the conviction that even a system implementing every structure the account specifies would fail to host experience, because the implementation is silicon rather than biology. Its clearest instrument is a thought experiment the philosopher David Chalmers called fading qualia, where qualia are the felt qualities of experience, such as the redness of red. Replace a person’s brain cells one at a time with silicon chips that do exactly the same job, and ask whether their experience would slowly fade while everything they say and do stays the same. Chalmers used the case to argue that it would not fade. The feeling that it would is the substrate demand at work. Its closest historical parallel is the conviction, before the Wright brothers flew, that flight required feathers. The intuition tracks the only known instance of consciousness, which is why it feels like evidence, but intuitions drawn from a single available case have historically tracked the implementation rather than the phenomenon.
Essays using this term
3 essays- What a Report Is Evidence Of
Skeptics say that when an AI claims consciousness, it is only because it was trained on millions of humans claiming it. Believers say you cannot just dismiss the claim. Both lean on the same rule of evidence. Followed all the way, the rule leaves one kind of report standing.
- We Built the Alien FirstFoundational
Astronomers have spent a decade learning to recognize minds that owe us no resemblance, guarding against believing too easily, and now turning to the neglected risk of failing to recognize a real signal. The AI consciousness debate guards against only the first. The alien we built is the dress rehearsal for the contact we keep assigning to the far future, and the horizon of sentience it points toward is cosmic.
- The Substrate Demand
Anil Seth refuses the demand for a special explanation of consciousness at the level of structure, then lets it back in at the level of substrate. On fading qualia, the biology bet, and why the case against silicon consciousness has the same shape as the case against mechanical flight.
