> Il 1 maggio 2018 alle 17.36 Bruno Marchal <[email protected]> ha scritto: > > > > > > On 29 Apr 2018, at 08:21, 'scerir' via Everything List < > [email protected] mailto:[email protected] > > 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. >
Yes, I can agree with that. But it is possible there was, in those years, another issue too. I mean conservation of energy. It is not possible, in general, to preserve conservation of energy in each universe during the split-decoherence, especially in case of superposition of states of different energy. In this special case energy increase in one universe and decrease in another universe. > 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 > > > > > > > > > > > > > Il 28 aprile 2018 alle 23.01 [email protected] > > mailto:[email protected] 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] > > > mailto:[email protected] . > > > To post to this group, send email to > > > [email protected] mailto:[email protected] . > > > 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] > > mailto:[email protected] . > > To post to this group, send email to > > [email protected] mailto:[email protected] . > > 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] > mailto:[email protected] . > To post to this group, send email to [email protected] > mailto:[email protected] . > 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. 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