On 14 Aug 2015, at 08:26, John Clark wrote:
On Thu, Aug 13, 2015 , Bruno Marchal <[email protected]> wrote:
> And I have not yet see a proof that the multiverse is non
local.
That's because there is no such proof, but there is proof
that in any physical theory that is consistent with experiment at
least one of the following must be wrong:
1) Realism
2) Determinism
3) Locality
If I had to ditch one (and I do) I'd pick determinism, but I don't
know if the universe has the same preference I do.
> Everett wave evolve deterministically,
I've never heard of a Everett wave. Schrödinger's wave is
deterministic but that certainly doesn't mean the physical world is.
> Einstein called "insanity" the belief in "God play dice",
Einstein never knew about Bell's inequality,
Bell's 1964 paper only make quantitative what Einstein saw clearly
already in 1627 at the Solvay Congress in Brussels, and made clear
qualitatively in its EPR paper. Bell's just made it more
quantitatively palpable, which helped some scientists to understand
that it was not just "philosophy".
For me, Einstein is the main discoverer of the non locality in the QM
+collapse theory, and is the first to say that such a theory is just
insane. Then you can interpret Bell as a experimental refutation of
the collapse, by using the natural locality axiom.
and half a century after Einstein made the above famous statement
Stephen Hawkings said "God not only plays dice He sometimes throws
the dice where they can't be seen".
> and about non-locality, he said he would prefer to be a
plumber than a physicist if that was true.
I think Einstein was far more worried about non-locality than
the loss of determinism, and the loss of realism would be even worse.
"realism" is ambiguous here. In this context it often means "one
world" or "~MWI". In the "metaphysical" or "theological" context it
just means "independent of us". For example, Arithmetical realism is
the belief that "4x^2 - 3y = 0" has a solution (in the integers, or in
the natural numbers) or not independently of us.
I think that Einstein would have eventually opt for Everett's view on
the matter, as it keeps determinism, locality, and even contextuality,
in the big picture, and explain the appearance of a lack of them by
the 1-3 difference.
My point is then that for this to work, the wave equation must also be
explained by the 3-1 difference.
i did it partially, and get more than the quanta logic, as we get
freely a theory of qualia extended it.
You may prefer a universe that has all 3 attributes, me too, but you
can't always get what you want; if experiment says we can't have all
3 then we can't have all 3. End of story.
Experiment does not show that reality is not local, indeterminist or
acontextual.
Experiment confirms only the MWI, as the MWI theory explains why such
weird features are apparent, but would exist physically only if the QM
was not linear, or if the MWI were false.
Some people argue that there is still no clear re-establishment of
locality with Everett, but to say that non-locality exists is the
strong startling statement here so that it is up to the believers in
that non-locality to prove its existence in the multiverse (not just
in our branch, because that follows already from QM).
So I am waiting since long a proof of no-locality in the big picture,
and there are none, as the QM main equation is just linear and local,
as Everett explains already very well. There are not yet such papers I
think. All papers proving the existence of non-locality talk only on
the branch we keep an access on. It shows that a single branch has non
local feature. It does not show that the physical reality as a whole
is non local.
Bruno
John K Clark
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