On 11/21/2017 7:09 PM, John Clark wrote:
On Tue, Nov 21, 2017 at 7:05 PM, Bruce Kellett
<bhkell...@optusnet.com.au <mailto:bhkell...@optusnet.com.au>>wrote:
>
it seems that for Maudlin MWi is essentially incoherent because it
cannot come to grips with a sensible account of probabilities. All
attempts to derive probabilities and the Born rule in MWI have
been shown to be circular
But Copenhagen is no better at deriving the Born Rule
nor is any other quantum interpretation
although Gleason's Theorem says that if the quantum wave function is
related to probability then
the
square of the absolute value
is the only one that doesn't produce contradictions. So if you're
going to have a probability rule involving the wave function its got
to be the Born Rule, the function cubed or anything else just won't
do. But the wave function itself is 100% deterministic so why involve
probability at all?
Of course the obvious answer to that is, "It's what we observe." At
first it was thought that it's the kind of randomness based on ignorance
and some hidden variable would explain it. But then it turned out the
hidden variable would have be non-local.
Brent
I don't have a very good answer to that nor does anybody else
,
but the Many Worlds people have made a better stab at it than most:
https://arxiv.org/abs/1405.7577
John K Clark
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