On Monday, January 25, 2021 at 1:23:07 PM UTC-7 Brent wrote:
> > > On 1/25/2021 5:39 AM, Alan Grayson wrote: > > > > On Wednesday, January 20, 2021 at 12:59:02 PM UTC-7 Brent wrote: > >> >> >> On 1/20/2021 3:58 AM, John Clark wrote: >> >> On Wed, Jan 20, 2021 at 12:01 AM Alan Grayson <[email protected]> >> wrote: >> >> >> No, there are *NOT* exactly 10 winners! There are an astronomical >>>> number to an astronomical power number horses that won that race with only >>>> a submicroscopic difference between them, and there are also an >>>> astronomical number to an astronomical power number of Alan Graysons that >>>> won his bet on that race. >>>> >>> >>> *> So instead of all possible outcomes being measured in some other >>> world,* >>> >> >> Except for its simplicity the most important advantage of many worlds is >> that it doesn't have to explain what "measured" means, or what a "observer" >> means, or what a "choice" means because in many worlds ANY physical change >> of any sort causes the Universe to split. >> >> >> That sounds like a bug not a feature. Does every C14 decay in your body >> instantiate a different world? Every photon that's absorbed by that >> chlorophyll molecule instead of that other molecule? As Bruno says, "World" >> and "Universe" become hard to define. If you say "This universe." does it >> mean anything, even for a moment? But it you can't give meaning to "This" >> how can you make sense of an experiment in which "This" evolves into >> "That"? You need some way to talk about the quasi-classical world, because >> as Bohr noted, that's where we live and that's where science predicts >> things. >> >> Brent >> > > Now you know why I call the MWI "Trump Physics". Its advocates will never > admit it's woefully wrong, like our hopefully departed "leader" who never > admits a mistake. Another example of this utter foolishness; note the > numerous worlds created by ants which move along in repeated zig-zags. AG > > > I think you get entirely to*o* worked up over it. > *Do you believe Trump won by a landslide? Do lies matter? Does the MWI help us understand physical reality? Is the alleged cure (of QM) worse than the disease? AG* We have a theory that has a huge domain of application. Is predictive and > extremely accurate. The only problem is the interpretation of the > processes described by the mathematics. Interpretations are not theories. > They are not right or wrong, because they can't be tested. W.V.O. Quine > contributed to this confusion by saying that ontology was the set of > entities presupposed by our best theory. That's a philosopher's view. I > seems to make the questions of Hilbert space or C*-algebra, discrete or > continuous, Turing computable or not, into important questions of what > really, really exists. That's the wrong attitude. It's the error of the > misplaced concrete. Feynmann had it right when he said,"Every good > physicists knows five different ways to express the same physics in > mathematics." The function of interpretations is to suggest better > theories. Better theories are ones with bigger domains and more accurate > predictions. First we get better knowledge of facts; then we can worry > about the ontology later. That's why I say epistemology precedes ontology. > > Everett saw that there was a gap in QM. Measurement wasn't really given a > physical description. The collapse of the wave function was just stuck in > by hand. So he tried to fill it in. This led to the study of decoherence > and a better theory of measurement. It provides some definition of the > Heisenberg cut. I think it still leaves a small gap. MWI advocates think > it's complete. But it's an interpretation...it's not true or false. What > will lead to unification with gravity and spacetime is the interesting > question. > > BrentI > -- 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/b6b9b37d-ae11-4d4b-a1f7-1622f5f993a1n%40googlegroups.com.
