Re: aiming to complete Everett's derivation of the Born Rule

[Brent Meeker]

On 4/18/2022 12:55 PM, Alan Grayson wrote:


On Monday, April 18, 2022 at 12:32:36 PM UTC-6 meeke...@gmail.com wrote:



    On 4/18/2022 11:17 AM, Alan Grayson wrote:


    On Monday, April 18, 2022 at 12:06:04 PM UTC-6 meeke...@gmail.com
    wrote:



        On 4/18/2022 5:35 AM, Alan Grayson wrote:

            But my main point is that acausality is tantamount to
            unintelligible. IMO, there's a huge difference between
            being unable to perfectly predict the time evolution of
            a system, and it being uncaused. AG

            Is there?  Even if the unpredicitability is
            in-principle?  What is the huge difference?

            Brent


         So what, in your view, bugged AE about probability in QM? AG

        I asked you first.

        Brent


    IIRC, you asked what was bugging ME, not AE. My guess is that he
    thought acausality violated locality and/or realism. For example,
    the Pilot Wave theory assumes each particle has a definite
    position and momentum. It doesn't violate the HUP because the HUP
    simply limits what we can measure. AG

    I asked you  "What is the huge difference?"  Which you ignored and
    just asked another question.

    Brent


But the difference is obvious and implied. Whereas the resultant 
probabilties attained might be indistinguishable, the underlying 
realities are clearly distinct, say between Copenhagen and 
deBroglie-Bohm (Pilot Wave theory). Since, at heart, you're an 
instrumentalist, I assume the distinction for you is meaningless.  AG

You can invent arbitrarily many theories of "distinct underlying 
realities" which are empirically indistinguishable...that's why they are 
just interpretations.  The only use I see for interpretations with no 
empirical difference is they may suggest better theories.  I see no 
other reason to prefer one interpretation over another.  You might as 
well introduce fairies into an interpretation or ask Deepak Chopra which 
one is really real.

Brent

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