> On 13 Oct 2019, at 21:19, 'Brent Meeker' via Everything List 
> <[email protected]> wrote:
> 
> 
> 
> On 10/13/2019 6:48 AM, Bruno Marchal wrote:
>> 
>>> On 9 Oct 2019, at 12:52, Alan Grayson <[email protected] 
>>> <mailto:[email protected]>> wrote:
>>> 
>>> 
>>> 
>>> On Wednesday, October 9, 2019 at 12:28:38 AM UTC-6, Brent wrote:
>>> 
>>> 
>>> On 10/8/2019 9:20 PM, Alan Grayson wrote: 
>>> > I've argued this before, but it's worth stating again. It's a 
>>> > misintepretation of superposition to claim that a system described by 
>>> > it, is in all the component states simultaneously. As is easily seen 
>>> > in ordinary vector space, an arbitrary vector has an uncountable 
>>> > number of different representations. Thus, to claim it is in some 
>>> > specific set of component states simultaneously, makes no sense. Thus 
>>> > evaporates a key "mystery" of quantum theory, inclusive of S's cat and 
>>> > Everett's many worlds. AG 
>>> 
>>> No.  It changes the problem to the question of why there are preferred 
>>> bases. 
>>> 
>>> Brent 
>>> 
>>> Who chose Alive and Dead, or Awake and Sleeping for the S. cat? Wasn't it 
>>> the observer? Since they had other choices, my claim stands. AG 
>> 
>> Everett showed explicitly that the relative states, and their relative 
>> statistics does not depend on the choice of the bases.
>> Something quite similar occur already in arithmetic, with a much general 
>> notion of "base”.
> 
> But he didn't explain why observations were only possible in some bases.

Which is something that I doubt about. Maybe this is just false. Only Zurel 
makes me think that the position base is more important … for us (the human), 
but other bases might play a similar role. For me this is an open problem.

Bruno



> 
> Brent
> 
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