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 < > [email protected] <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 [email protected] <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 [email protected] <javascript:>. > To post to this group, send email to [email protected] > <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 [email protected] <javascript:>. > To post to this group, send email to [email protected] > <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 [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.
