AB,
BH keeps asserting that it is an emergent property, but without any definition of how conscious awareness works, this remains an unprovable assertion, and to my mind a totally illogical one.
What BH actually "asserts" is as follows:
1. That emergence - ie, the phenomenon in systems of properties that are not properties of the constituent parts – is well understood.
2. That there's nothing inherently different or unique about consciousness that would exempt it from being an emergent property, and moreover that it's entirely consistent with emergence.
3. That there are lots of phenomena that aren't yet fully understood that are known to be emergent properties - fluid dynamics and wetness respectively for example. It's not in other words necessary fully to know how something works to know that it's probably an emergent property.
4. The only illogicality here is first just to abandon emergence as the explanation with no good reason for doing so, and second to replace it with an explanation ("soul") that has no definition, no supporting logic and no evidence of any kind.
5. That accepting some complexity as an emergent property as fine, but not when that complexity looks really hard without demonstrating a qualitative difference between them is stupid. It's also fundamentally to underestimate the scale of neural activities in brains - and for this purpose, the only difference between ant colonies and brains
is scale.
6. That making unknowable assertions about things "never" being possible is foolish at best, both conceptually and because there are people actively working on the solutions that would show you to be wrong.
7. That consistently cherry picking from the rebuttals that undo you and ignoring the rest is a type of dishonesty.
In other words, working top down from some religious beliefs you hold
a priori to force an explanatory narrative onto reality when it doesn't fit while simultaneously kidding yourself that you're actually working bottom up to find a solution to a real problem is just ass-backwards thinking.
Hope that clears it up for you.