Le mer. 27 janv. 2021 à 11:54, Alan Grayson <[email protected]> a écrit :
> > > On Tuesday, January 12, 2021 at 10:19:59 PM UTC-7 Pierz wrote: > >> >> >> On Monday, January 4, 2021 at 12:09:06 PM UTC+11 [email protected] >> wrote: >> >>> On Sunday, January 3, 2021 at 3:56:51 PM UTC-7 [email protected] wrote: >>> >>>> On Sun, Jan 3, 2021 at 5:21 PM Alan Grayson <[email protected]> >>>> wrote: >>>> >>>> *> The MWI doesn't guarantee that these subsequent measurements, for >>>>> subsequent horse races say, are occurring in the SAME OTHER worlds as >>>>> trials progress, to get ensembles in those OTHER worlds. * >>>> >>>> >>>> I don't know what you mean by "SAME OTHER worlds", the same as what? In >>>> one world Alan Grayson remembers having seen the electron go left, in >>>> another world Alan Grayson remembers having seen the electron go right, >>>> other than that the two worlds are absolutely identical, so which one was >>>> the "SAME OTHER world"? >>>> >>>> > You seem to avoid the fact that no where does the MWI guarantee [...] >>>> >>>> >>>> Quantum mechanics is not in the guarantee business, it deals with >>>> probability. >>>> >>>> *> I don't think you understand my point, which isn't complicated. * >>>> >>>> >>>> Yes, your point is very simple indeed, but the word simple can have 2 >>>> meanings, one of them is complementary and the other not so much. >>>> >>> >>> In first trial, the MWI postulates other worlds comes into existence. >>> Same other worlds in second trial? Same other worlds in third trial, etc? >>> Where does the MWI assert these other worlds are the SAME other worlds? >>> Unless it does, you only have ONE measurement in each of these worlds. No >>> probability exists in these other worlds since no ensemble of measurements >>> exist in these other world. AG >>> >> >> You grossly misunderstand MWI. There are no "same other" worlds. The >> worlds that arise at each trial are different in precisely one way and one >> way only: the eigenvalue recorded for the experiment. The different >> eigenvalues will then give rise to a "wave of differentiations" as the >> consequences of that singular difference ramifies, causing the different >> worlds generated by the original experimental difference to multiply. >> "World" really means a unique configuration of the universal wave function, >> so two worlds at different trials can't possibly be the "same world", and >> yes, there is only one measurement in each. >> > > *If there is only one measurement in each other world -- which has been my > claim throughout -- how can Born's rule be satisfied in the MWI* > AGGGGG*G* > Every world has a past... So if you do n experiments after n trials you have 2^n number of worlds each having a past of n trials. > > > > >> That is precisely the stipulation of MWI. If we have a quantum experiment >> with two eigenvalues 1 and 0, and each is equally likely per the Born rule, >> then the MWI interpretation is that - effectively - two worlds are created. >> You, the experimenter, end up in both, each version knowing nothing about >> the other. So, in the "objective world" (the view from outside the whole >> wave function as it were), no probability is involved. But if you repeat >> this experiment many times, each version of you will record an apparently >> random sequence of 1s and 0s. Your best prediction of what happens in the >> next experiment is that it's a 50/50 toss up between 1 and 0. Objectively >> there's no randomness, subjectively it appears that way. >> >> >>> >>> >>>> John K Clark See my new list at Extropolis >>>> <https://groups.google.com/g/extropolis> >>>> >>> -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/d71dbf38-5943-4f9f-9f1a-f7c5ea822c4cn%40googlegroups.com > <https://groups.google.com/d/msgid/everything-list/d71dbf38-5943-4f9f-9f1a-f7c5ea822c4cn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAMW2kAoaG7ZGuDR0noGHjxUXJTbPupoEfL8rZ4Y89dWeeAYohA%40mail.gmail.com.
