On Tue, Apr 12, 2022 at 4:31 PM smitra <smi...@zonnet.nl> wrote:

> Now, in previous discussions the argument was made that you can't
> consider a simulation of observers in a quantum computer because, by
> definition, measurements must be irreversible.

That was never the argument. The problem that was raised over the
simulation of people (and measurements) in a quantum computer was that
measurement involves the formation of permanent records through
decoherence. And many copies of the results so that many different
observers can check what has been done. Decoherence is also necessary to
find a measurement basis that is robust against decoherence in the
environment. QCs can never do this. A quantum computer is not adapted to
the formation of permanent records, and it goes to great lengths to avoid
decoherence. Consequently, a person simulated in a computer can report that
he has achieved all sorts of results, but he cannot produce any evidence of
this. Personal memories are not scientific evidence. And it is doubtful if
even personal memories could be created in a quantum computer -- QCs do not
produce any permanent records before the final result is printed out, and
personal memories are a form of (semi-)permanent record.


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