> On 15 Sep 2019, at 16:49, John Clark <johnkcl...@gmail.com> wrote:
> 
> On Sat, Sep 14, 2019 at 7:18 PM Lawrence Crowell 
> <goldenfieldquaterni...@gmail.com <mailto:goldenfieldquaterni...@gmail.com>> 
> wrote:
> 
> >>The Schrodinger wave equation says the ticket is printed in every possible 
> >>way and the winning number is picked in every possible way, but that's not 
> >>all you yourself are also a quantum object so you interact with the ticket 
> >>in every possible way. Some interactions result in great wealth, some 
> >>result in no profit, and some result in oblivion as in the suicide 
> >>scenario.    
> 
> > The Schödinger equation says nothing of the sort.
> 
> It says when an electron moves from point A to point B it can do so by any 
> path, although some paths are more likely than others.
>  
> > It is not a Charlie Parker "anything goes" system. It just tells how 
> > probability amplitudes that define a state or wave in a Fourier sum evolves 
> > with time. [...] It would be argued there are some MWI splittings that may 
> > play a role in determining the lottery number on the winning ticket, but 
> > there is no way this can at all be localized or identified.
> 
> 
> The Schödinger Equation says the wave function is a direct representation of 
> reality, and the Many World's people say that too, they say that's all that 
> is needed. I admit it doesn't seem that way because when we observe an 
> electron hitting a photographic plate we don't see a wave function and we 
> don't see a large blob we see a small localized spot at a definite place. So 
> some people concluded that Schödinger's Equation wasn't enough and they 
> tacked on a lot of extra stuff about it collapsing when a observation is 
> made, something the equation itself doesn't even hint at. Many Worlds says 
> the extra stuff is unnecessary and Schödinger's Equation is all that is 
> needed.
> 
> When you observe a electron, in other words when you become entangled with 
> the electron, in still other words when both you and the electron have the 
> same quantum wave function, there is a connection between the "you "system 
> and the "electron" system. That combined you-electron system obeys 
> Schödinger's Equation and the system smoothly evolves into a entangled state, 
> a superposition of every place the electron could have been and you observing 
> the electron at that location.
> 
> But rather than say the combined you-electron system having evolved into a 
> superposition of all possible states Many World's says it evolves into every 
> possible observer. We don't end up with one observer who has many ideas where 
> the electron was seen, instead we end up with many worlds each with an 
> observer in it with a single definite idea of where the electron was seen.  
>  
> > As for below the Wheeler Delayed Choice experiment in the MWI setting a 
> > measurement of whether the electron went through a slit is performed after 
> > it has passed.
> 
> Many Worlds can explain delayed choice without invoking backward causality.


Oh! Nice! But that contradicts your idea that the MWI remains a non local 
theory. Because the argument to show that delayed choice can be done without 
backward causality will show that Many Worlds explains the violation of Bell’s 
inequality without FTL action at a distance.

Bruno



> The photon hits a half silvered mirror so 50% of the time the photon takes 
> path A and 50% of the time it takes path B. At the end of each path is a 
> detector which destroys the photon and sends the information on which path 
> the photon took to a physical memory system of some sort that, just like 
> everything else, must obey Schödinger's Equation. 
> 
> Many Worlds says if there is a change the universe splits and in this case 
> the only difference is a change in the physical memory,  in one universe the 
> memory is it going through path A and the other it remembers it going 
> throughpath B. But if you then use quantum erasure then the physical state of 
> the memory is no longer different, they are in the exact same state, so there 
> is no longer any difference between the 2 universes, so they merge back 
> together. But now the single universe seems to have indications the photon 
> followed path A only and indications it followed path B only and this can 
> cause interference bands. 
> 
> John K Clark 
> 
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