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Danny Kumpf's avatar

You mentioned the one question that I think actually matters on this topic, which is: "How can we tell whether a chunk of matter is experiencing consciousness?" But then you don't seem to actually answer this question - you seem to answer a similar but easier question of "how do we tell whether a chunk of mater is experiencing *human-like* consciousness?"

I'm totally on board with the ideas that brain state == qualia, that there are no "global qualia fields", that qualia are totally dependent on substrate, and that there's no meaningful answer to "what would it be like for *me* to be a bat". But this still leaves the question: is there anything that it is like for *the bat* to be a bat? Is the brain state of the bat one of the ones that == some kind of qualia? How would we find that out?

Even if we're confident a system doesn't experience human-like qualia (because those are fundamentally == the human brain state), how do we know whether it experiences *its own* type of qualia? I don't think your article answers this question, but I'm curious on your take. Do you think the question is dissolvable somehow?

LS's avatar

I agree with a lot of this, to the point of being mildly annoyed that you wrote it down before I did, but let me flag what I think is an interesting bit of weirdness that you gloss over: "the brain" is big, and the set of all neurons in an organism's body is bigger (e.g., for vertebrates, spinal cord + peripheral nervous system). Human subjective experience as normally conceived of seems to map onto the state of only a fairly small chunk of this machinery, presumably part of the isocortex (I'm too woke to say "neocortex" because it teleologically privileges mammals). But there's a whole literature on e.g. decorticate cats -- cats with their cortexes surgically removed. The upshot is they're kind of weird. They live, though! They walk around, they eat, they even have babies! The point being: it is not just a pedantic little detail that the cortex is not the whole brain. There's lots of things going on outside it, including things that bypass it and use sensory input in a very sophisticated way. So: are there modules within the human nervous system but outside the familiar domain of the cortex that are also "conscious" or whatever in their own right? If so, it's kind of funny that you never run into someone who *isn't* a cortex. This probably just comes down to the implementation of the language faculty. But then we're kind of verging on seeing ourselves as an LLM of a sort.

Personally I'm happy to deflate away the whole thing and say, yeah, you can profitably describe many systems and parts of system as have internal informational states, and that is all our broader "folk" concept of consciousness is about, while our narrow "folk" concept of consciousness covers the specific details of the states of a certain part of a certain kind of primate's nervous system. The end. But it is a somewhat strange picture of the world.

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