On Fri, Jun 14, 2019 at 11:42 AM 'Brent Meeker' via Everything List < everything-list@googlegroups.com> wrote:
> On 6/13/2019 6:32 PM, Lawrence Crowell wrote: > > > The dependency of the initial and final states means the probabilities are > classical and will obey the Bell inequality. This is a pretty iron clad > result and I am not sure why some people persist in thinking they can get > around it. > > > If you consider a multiverse view in which there are an ensemble of > results (whose correlations violate Bell's inequality) > I don't understand this multiverse picture. If one is using Everett's 'many worlds' picture, then there are only four 'worlds' in the usual model with binary outcomes of the measurements. Playing the movie backwards may well recover the initial state, but that is not a retrocausal mechanism. Playing the movie of a Stern-Gerlach measurement backwards will certain recover the initial state, but that does not mean that one can reverse an actual experiment with a measured result. and then you just "play the multiverse movie backwards" will not the many > multiverse results interfere and re-cohere to produce the singlet state? > The multiverse is non-local and so can violate Bell's inequality. I agree > with Bruce that this doesn't provide a mechanism, but given the time > symmetry of Schoedinger's equation I don't see that it's a different theory. > It's not a different theory, but neither is it a retrocausal theory -- the initial state does not depend on the final polariser settings. Bruce -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLTCeVXBLkPY9NrTi-5iPSUXyoOLysawSnQ1d%3DzgNoseVQ%40mail.gmail.com.
