On Tuesday, November 27, 2018 at 6:00:50 PM UTC, Philip Thrift wrote: > > > > On Tuesday, November 27, 2018 at 8:43:35 AM UTC-6, [email protected] > wrote: >> >> >> >> On Tuesday, November 27, 2018 at 9:27:46 AM UTC, Philip Thrift wrote: >>> >>> >>> >>> On Monday, November 26, 2018 at 3:43:14 PM UTC-6, [email protected] >>> wrote: >>>> >>>> >>>> *I checked the postulates in Feynman's Sums Over Histories (in link >>>> provided by Phil) and I see nothing related to waves, as expected, and >>>> thus >>>> nothing about collapse of anything. I would suppose the same applies to >>>> Heisenberg's Matrix Mechanics; no waves, no collapse. I suppose you could >>>> say they just produce correct probabilities, and imply nothing about >>>> relative states other than their probabilities (which wave mechanics >>>> does), >>>> but certainly nothing about consciousness. To summarize: you're right that >>>> they are "no collapse" theories, but IMO they say nothing about >>>> consciousness. AG* >>>> >>>>> >>>>> >>> >>> >>> In terms of the path-integral (PI) interpretation [ interesting lecture: >>> https://www.perimeterinstitute.ca/videos/path-integral-interpretation-quantum-mechanics >>> >>> ], there is in effect no waves or wave function, just paths, or histories, >>> in the sum-over-histories (SOH) terminology. >>> >>> There is still "decoherence" in the SOH (a single history is ultimately >>> "realized"), but it could be called "selection": a single history is >>> selected from the total ensemble of multiple and interfering histories. >>> E.g. a single point on a screen is "hit" by a photon in the double-slit >>> experiment. >>> >> >> *Does "selection" add any insight to the measurement problem; that is, >> why do we get what we get? And if not, what is its value? TIA, AG * >> >>> >>> >>> > If you look at it as a "selection of the fittest" (one history surviving > from an ensemble of histories), then it's like a form of quantum Darwinism. > The quantum substrate is a cruel world where all histories (but one) die. >
That's not an explanation; rather, a vacuous statement of the result. AG > > - pt > > > > -- 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.
