From: <agrayson2...@gmail.com <mailto:agrayson2...@gmail.com>>
On Monday, June 11, 2018 at 1:37:53 AM UTC, Bruce wrote:
From: *Bruno Marchal* <mar...@ulb.ac.be
Everett prove the contrary, and he convinced me when I read it. I
found “his proof” used in many books on quantum computing,
although with different motivation. Thee result of an experiment,
obviously depend of what you measure, but when you embed the
observer in the wave, you get that what they find is independent
of the choice of the base used to describe the “observer” and the
“observed”. If not, the MW would already be refuted.
In that case, MW is refuted. Clearly, what the observer finds is
dependent on the basis in which he is described. Or else
experiments would not have definite results when described in the
laboratory from the 1p perspective. Even if you take the 'bird'
view of the whole multiverse -- which is, I agree, independent of
the basis in which it is described -- the view of any observer
embedded in the multiverse is totally basis-dependent. That is,
after all, what we mean by 'worlds' -- the view from within, or
the 1p view. But that view depends on how you describe it: the way
in which you partition the multiverse itself. Only certain very
special bases are robust against environmental decoherence -- how
else do you resolve the Schrödinger cat issue?
Bruce
*So you find the resolution in the fact that according to decoherence
theory, the cat is simultaneously alive and dead for only short time? AG*
Decoherence has resolved the basis question long before the cyanide has
hit the cat.
Bruce
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