On 10/7/2015 3:47 AM, Bruno Marchal wrote:
But I think that's wrong. Brains are not like ideal von Neumann
computers or Turing machines that have "brain states" corresponding
to "mental states". If you simulated a brain using a computer you
would find that an enormous number of "brain states" were required to
instantiate a single conscious thought and furthermore the brains
states necessary for one thought overlapped with those necessary for
the next thought. So this overlap at the low level is part of the
physical continuity needed for consciousness.
But then you need to assume non-computationalisme, and consider
yourself as a non Turing elumable reality. OK, but that does not solve
the mind-body problem per se. It only introduce diffculties.
I didn't assume computationalism was false, I just assumed that relation
between thoughts and computations was one->many. If you instantiate
thoughts by simulating a brain in a digitial computer then each thought
or experience will correspond to many sequential steps in the
computation, with no sharp division between one thought and the next.
The fact that the physics can be simulated by discrete computation
doesn't imply that the conscious states are discrete.
The fact that consciousness state might be discrete implies that
physics cannot be simulated by discrete computation. Physics needs all
computations all at once to get the mathematically correct FPI.
??
Brent
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