> On 8 Oct 2019, at 14:02, Bruce Kellett <[email protected]> wrote:
> 
> On Tue, Oct 8, 2019 at 10:29 PM Bruno Marchal <[email protected] 
> <mailto:[email protected]>> wrote:
> On 6 Oct 2019, at 12:46, Bruce Kellett <[email protected] 
> <mailto:[email protected]>> wrote:
>> On Sun, Oct 6, 2019 at 7:23 PM Bruno Marchal <[email protected] 
>> <mailto:[email protected]>> wrote:
>> On 5 Oct 2019, at 13:05, Bruce Kellett <[email protected] 
>> <mailto:[email protected]>> wrote:
>>>> Let us start again. Consider the entangled singlet state that we have been 
>>>> talking about:
>>>>>     |psi> = (|+>|-> - |->|+>)/sqrt(2).
>>>> This refers to two spacetime locations;
>>> 
>>> You can’t at the start impose your own interpretation. You know that I 
>>> disagree with this interpretation since the start.
>>> 
>>> For goodness sake, Bruno, what are you talking about? You cannot 'disagree 
>>> with this interpretation'. That is what the singlet state when the 
>>> particles have separated means.
>> 
>> Meaning = interpretation. There is no consensus how to interpret the wave, 
>> even among “many-worlders”. Nothing is obvious here.
>> 
>> I think that everyone (except you, perhaps), agrees that this equation for 
>> the entangled singlet state refers to two particles that might have 
>> arbitrary space-time separation. This might not be obvious to you, but it is 
>> to everyone else.
> 
> Deustch interpret it as a continuum of worlds, like any quantum state, and 
> they differentiate locally, as shown by using the Heisenberg picture.
> 
> Going to the Heisenberg picture does not change anything. The two particles 
> are still at different spacetime locations so the state is non-local. Even 
> Deutsch agrees with this.
> 
>   
> IMO, it is you who are special when thinking that the interpretation of the 
> wave is obvious.
> 
> Keep in mind that I never really leave Mechanism, so physics is not a science 
> which describes reality, only the relatively observable.
> 
> 
> Maybe it is your attachment to 'Mechanism' that is keeping you from 
> understanding the non-locality of the singlet state.

That is not exactly what I call argumenting.

Bruno




> 
> Bruce
> 
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