"Put another way, this is the premise that the mind arises out of ordinary physics... If you are very religious, you might believe that a brain is not possible without a soul. But for most of us, this is an easy premise to accept." The thing that irks me about this is how it reinforces a common (and in my opinion, false) dichotomy: either you believe the mind is explicable in terms of ordinary physics or you believe…
One thing I rarely see discussed is the possibility that the brain is just too complex to practically reproduce. That is to say, that it is technically possible, but not practical. Evolution had billions of years, working in a massively parallel way to work this out after all. It's possible that the brain is a huge tangled mess of rules and special cases that we will never be able to fully understand and reproduce. A…
And it also got to work on it with a hundred billion stars with earth-like planets, in each of a hundred billion galaxies, and (maybe) in a basically infinite space of universes. All in parallel with infinite time to play with.
Is it so far-fetched to postulate that humans will hit our limits before getting this far?