From: *Bruno Marchal* <[email protected]> <mailto:[email protected]>
On 1 Aug 2018, at 06:11, Bruce Kellett <[email protected]
<mailto:[email protected]>> wrote:
the result for particle 2 depends on what was done to particle 1,
even at space-like separations.
Absolutely.
Whether you call this an 'influence' or simple an 'effect of one
measurement on the other', makes little difference.
I say that there is no space-separated instantaneous influence or
effect. The non-locality, or Bell’s inequality violation just do no
more reflect a physical action or influence, but a lack of knowledge
about the initial spins, and indeed it is the same Alice and Bob
distributed on all spins in all directions.
The point is that there is no information exchange in the normal
Shannon sense of information, so there is no possibility of
transmitting a message by this "influence”.
That is true too. But there is no influence at all.
In particular, there is no physical FTL transfer, and special
relativity is not violated.
Indeed, no action or transfer of anything are needed to explain the
apparent non locality measurable in all branches. But with one world,
there is still no information transfer, but there need to be an
influence at a distance. Not so in the relative state theory (at least
coming from Bell’s inequality violation).
I guess you will never accept that this is simply not true. The relative
state (Everett) theory is exactly the same as the collapse theory in
requiring instantaneous space-like influences.
Bruce
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