On 6/29/2015 4:46 PM, Bruce Kellett wrote:
Bruno Marchal wrote:
On 29 Jun 2015, at 12:27, Bruce Kellett wrote:
This then gives the entire universe. The computation may be repeated many times, but
by the identity of indiscernibles, those repetitions are just the same universe.
Assuming that the limit above is computable, which can hardly be the case (unless my
generalized brain is the entire universe, which I doubt, but of course, we don't know,
although the QM/MWI suggests empirically that it is not the case).
Your generalized brain has nothing to do with it. We are talking about computations run
by the dovetailer. And yes, QM in the Everettian interpretation does entail that the
entire universe/multiverse is computable. That is what unitary evolution means.
Unitary evolution over reals is only approximately computable.
Brent
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