On Wed, Aug 1, 2018 at 11:46 AM, Bruno Marchal <[email protected]> wrote:
>> >> If a unmeasured electron or any particle (the exparament was originally >> done with silver atoms) passes through a Stern Gerlach magnet the particle >> will be deflected up (relative to the orientation angle chosen to set the >> magnet at) or down 50% of the time. And if 2 electrons are quantum >> correlated and one is found to be deflected up then there is a 0% chance >> the other electron will also be deflected up. The really weird thing is >> that the direction I chose to be called "up" was completely arbitrary, I >> could have picked anything from 0 degrees to 360 degrees, and yet it's >> brother electron seems to instantly know what angle I chose to call "up" >> even though they are now 2 million light years away and the brothers were >> last in physical contact with each other a million years before I was born. > > > * >this is because the state has been prepared (locally) in this way. The > ud - du singlet sate can be written u’d’ -d’u’, for all other bases. The > singlet state ud - du means that Alice and Bob have the same or opposite > spin/polarisation and are correlated, but neither Alice nor Doc know in > which direction. All they know is that there is a correlation. When Alice > measure her spin, suddenly she knows in which “universe” she is, and she > knows that if she met Bob again, he will indeed have the opposite result. > With one unique world, we cannot explain this without FTL influence,* > I don't have any big disagreement with that. > *>but with the "many-world” we are back at a Bertlmann socks case. The > same for the Bell’s inequality violation. They are not violated in the > wave, but the wave explains that in each branch the Bell’s inequality is > violated, and if they believe in only that branch, they have to believe in > FTL, but if they take all branches into account, I don’t see the need to > invoke any FTL. * > The problem is neither FTL influences nor the creation of Many Worlds violates the know laws of physics and both theories agree with all known experimental results equally well, so how can one decide which one is correct? Until we get better data from some new astronomical observation or exparament it all comes down to personal incredulity; both you and I feel that although strange Many Worlds is less strange than the alternatives, but others may feel differently. And who knows maybe they're right, I doubt it but I've been wrong before. John K Clark -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
