Regarding the poll: Options 1 & 2 together do not cover all reasonable options.
It's perfectly possible that consciousness is a product of living brains, of organic chemistry, of particular processes which require the sorts of activity we already know to happen in brains- without requiring any mysterious substance or unknown process. It's also perfectly possible none of this is exactly reproducible in software or inorganic hardware.
So far, all the structures we know to display consciousness are alive, were grown (rather than built ) and are the end products of a chemical process known to have operated continuously for over 3 billion years.
Any of these facts may be critical.
Or none of them may be.
At the present level of understanding, there is plenty room for doubt. That gap will, probably, shrink. None of this requires dualism or mysticism.
It's perfectly possible that consciousness is a product of living brains, of organic chemistry, of particular processes which require the sorts of activity we already know to happen in brains- without requiring any mysterious substance or unknown process. It's also perfectly possible none of this is exactly reproducible in software or inorganic hardware.
So far, all the structures we know to display consciousness are alive, were grown (rather than built ) and are the end products of a chemical process known to have operated continuously for over 3 billion years.
Any of these facts may be critical.
Or none of them may be.
At the present level of understanding, there is plenty room for doubt. That gap will, probably, shrink. None of this requires dualism or mysticism.