On 12/31/2013 1:51 AM, Bruno Marchal wrote:
A entire parallel universe as big as our own that you can never go to or even see is about as far from being local as you can get.

Differentiation/splitting of "universes" is a local phenomenon. It is not instantaneous at all.

In an EPR experiment if you imagine a forward light cone of entanglement issuing from Alice and another from Bob those are STL effects (aka local), but where the light cones start to overlap it is observed that there is more correlation than can be accounted for by a local variables at the EPR source. That's sort of the definition of "influence". So the split into different quasi-classical worlds didn't just start from Alice or from Bob, they had to split in a a correlated way.


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