We may get a theory of consciousness, we may not, if we do get a theory then we would say the same thing about consciousness as we do about liquids. — Manuel
There is only one kind of emergence
I would agree that there is only one kind of emergence. In physics, all our examples of emergence are of the weak variety, such as sound from atoms or liquids from molecules. As you say "We may get a theory of consciousness, we may not, if we do get a theory then we would say the same thing about consciousness as we do about liquids"
As Chomsky said in:
Noam Chomsky on the Big Questions (Part 4)
59 min - I don't go along with Strawson and as far as he does to defend panpsychism. His argument for panpsychism is based on a serious point . Can there be what he calls radical emergence, entirely new properties somehow developing without any elements of them in earlier structures. I think that happens all the time. There's nothing in the hydrogen atom which says you're a liquid. Changes take place with other levels of complexity increasing that bring about entirely new phenomena. So I don't think that's a strong argument.
As Sabine Hossenfelder said in
What is Emergence
4min - A lot of people seem to think that consciousness of free will should be strongly emergent, but there's absolutely no reason to think that this is the case. For all we currently know, consciousness is weakly emergent, as any other collective phenomenon in large systems.
Parts exist in the world and wholes exist in the mind
Realism accepts that the parts exist in the world, but it may be argued that the whole, any collection of parts, only exists in the mind of an observer. Atoms may exist in the world, but sound only exists as a concept in the mind of an observer. Molecules may exist in the world, but liquids only exist as a concept in the mind of an observer.
I am taking atoms and molecules as metaphorical parts, in that atoms and molecules are in turn wholes made up of more fundamental parts.
Sound may emerge from atoms and liquid may emerge from molecules, but the emergent sound and liquid only exist as concepts in the mind.
The mind is conscious of both the physical parts, the atoms and molecules, and the conceptual wholes, the sounds and the liquids, even though only the physical parts exist in the world.
The emergence of consciousness from neurons hits the barrier of introspection
We are conscious of the atoms and the sounds they emerge into. We are conscious of the molecules and the liquids they emerge into.
How can we understand the neurons and the consciousness they emerge into.
I am taking neurons as metaphorical parts, in that neurons are in turn wholes made up of more fundamental parts.
We arrive at the self-referential problem of being conscious of the neurons and the consciousness they emerge into, ie, being conscious of consciousness itself.
Chomsky said in
The Ideas of Chomsky (1977), our mind is inaccessible to introspection:
36min - For example, that same image dominates the rationalist tradition as well, where it was assumed that one could exhaust the contents of the mind by careful attention. You know, you could really develop those clear and distinct ideas, and their consequences, and so on. And in fact, even if you move to someone, let's say, like Freud, with his evocation of the unconscious, still I think that a careful reading suggests that he regarded the unconscious as, in principle, accessible. That is, we could really perceive that theater, and stage, and the things on it carefully if only the barriers of repression and so on could be overcome. Well if what I've been suggesting is correct, that's just radically wrong, I mean, even wrong as a point of departure. There's no reason all that I can see for believing that the principles of metal computation that enter so intimately into our action or our interaction or our speech-- to believe that those principles are all accessible to introspection any more than the analysing mechanisms of our visual system, or, for that matter, the nature of liver is accessible to introspection.
IE, the problem of consciousness emerging from neurons hits the barrier, as Chomsky pointed out, of the inaccessibility of introspection, of consciousness being conscious of itself, and therefore may never be solvable.