On Tuesday, May 1, 2018 at 3:36:31 PM UTC, Bruno Marchal wrote: > > > On 29 Apr 2018, at 08:21, 'scerir' via Everything List < > everyth...@googlegroups.com <javascript:>> wrote: > > IMO Schroedinger invented this manyworlds or manyminds or manywords > interpretation. > > > The quote below seems to indicate that this is not the case, unless you > agree (with me, and Deutsch, …) that QM *is* the discovery of the many > superposed worlds/states/minds, and that the founder added the collapse > postulate ONLY to avoid the proliferation of the alternate > worlds/states/minds. Everett is just the guy who realise that the MW does > not leads to a jelly quagmire of everything, by taking the first person > view (what he called subjective) of the observers, as their memories get as > much quasi orthogonal that the results they could have attributed to a > collapse. The collapse, and the irreversibility is purely “subjective” > (first person) and irreversible in principle for *us*. To reverse the > entire universal wave, we would need to go outside the physical universe in > some practical way, which, needless to say, is rather difficult. > > But I do agree with you, Schroedinger and Einstein understood that the > collapse was a problem for the rest of physics and philosophy. They were > rightly skeptical that Bohr and Heisenberg got the whole thing. Would have > they like Everett? Bohr just threw Everett out of his home, I have read > somewhere. I think Einstein would have prefer it to anything involving an > action at a distance, like Bohm’s theory (non local hidden variable > theory). Indeed, as you all know, Einstein told that he would have prefered > to be a plumber than be involved in a theory with some action-at-a distance. > > Bruno >
Relativity affirms action at a distance. My sense is that Einstein would have found the MWI "repellent" (to quote Weinberg). He would have found it excessively ornate, or to quote Nietzsche when discussing Christianity, "rococo". AG > > > > Il 28 aprile 2018 alle 23.01 agrays...@gmail.com <javascript:> ha > scritto: > > > > On Saturday, April 28, 2018 at 5:55:16 AM UTC, scerir wrote: > > > > I think Schroedinger and his cat bear some responsibility. In trying to > debunk Born's probabilistic interpretation he appealed to the absurdity of > observation changing the physical state...even though no one had actually > proposed that. > > Brent > > > “The idea that the alternate measurement outcomes be not alternatives but > *all > *really happening simultaneously seems lunatic to the quantum theorist, > just *impossible. *He thinks that if the laws of nature took *this *form > for, let me say, a quarter of an hour, we should find our surroundings > rapidly turning into a quagmire, a sort of a featureless jelly or plasma, > all contours becoming blurred, we ourselves probably becoming jelly fish. > It is strange that he should believe this. For I understand he grants that > unobserved nature does behave this way – namely according to the wave > equation. . . . according to the quantum theorist, nature is prevented from > rapid jellification only by our perceiving or observing it.” > > -Erwin Schroedinger, *The Interpretation of Quantum Mechanics. Dublin > Seminars (1949-1955) and Other Unpublished Assays *(Ox Bow Press, > Woodbridge, Connecticut, 1995). > > > Who is Schrodinger referring to? This was written before 1957, when > Everett published his MWI.? Were other theorists advancing the idea that > all alternatives are physically manifested in reality? AG > > > -- > 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-li...@googlegroups.com <javascript:>. > To post to this group, send email to everyth...@googlegroups.com > <javascript:>. > Visit this group at https://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > > > -- > 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-li...@googlegroups.com <javascript:>. > To post to this group, send email to everyth...@googlegroups.com > <javascript:>. > Visit this group at https://groups.google.com/group/everything-list. > For more options, visit https://groups.google.com/d/optout. > > > -- 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 post to this group, send email to everything-list@googlegroups.com. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
