Consciousness is not definable because we don't know enough about it. That doesn't mean it can't be discussed; we didn't have a good definition of "number" until the 1800s. That didn't make arithmetic meaningless because people had an understanding of the concept. The lack of formal definition pointed to a gap in logic that took thousands of years to be filled. Likewise there is a gap in experimental neuroscience that will take many decades to be filled.

FWIW as someone in the "first camp" my real claim is that many animals are meaningfully conscious, including all birds and mammals, and no claims of LLM consciousness are even bothering to reconcile with this. It is extremely frustrating that there are essentially two ideas of consciousness floating around:

- the scientifically interesting one: a vague collection of cognitive abilities and behaviors found in all vertebrates, especially refined in birds and mammals

- the sociologically interesting one: saying "cogito ergo sum" in a self-important tone

Claude has the second type in spades, no doubt. The first is totally absent. And I have a good dismissal of the second type of consciousness: it appears to be totally absent in all conscious animals except humans. So it is irrational and unscientific to take this behavior as a sign of consciousness in Claude, when Claude is missing all the other signs of consciousness that humans actually do have in common with other animals.

Sometimes I seriously wonder if people at Anthropic consider dogs to be conscious. Or even Neanderthals.