On 11/2/2013 10:53 AM, John Clark wrote:
On Fri, Nov 1, 2013 at 5:22 PM, Quentin Anciaux <allco...@gmail.com <mailto:allco...@gmail.com>> wrote:


        >> You have been duplicated so there are TWO FIRST PERSON POV and they 
both
        remember writing the diary, so which one is Bruno Marchal talking about?


    > Anyone of the two


So "you" sees both Moscow AND Washington.

    > each will have a different diary


A different diary?? Both the Washington Man and the Helsinki Man remember writing the exact same identical diary and the last line says " I Quentin Anciaux in Helsinki am now walking into the duplication chamber, and now I see the operator starting to push the on butto....".

So it's true that "you" wrote the diary, but which one is "you"?

As I see it, the question is whether the duplication experiment provides a good model of randomness. If we imagine doing the experiment four times, sending the subject(s) through repeatedly at the end there will be 16 diaries and they will contain the entries:

MMMM, WMMM, MWMM, WWMM, MMWM, WMWM, MWWM, WWWM, MMMW, WMMW, MWMW, WWMW, MMWW, 
WMWW, MWWW, WWWW

and so the participants might compare diaries and conclude that going to Moscow or Washington is a random event with probability 1/2 - or at least in limit of large numbers of repetitions. Karl Popper already suggested this model of randomness in "The Logic of Scientific Discovery" and he probably wasn't the first.

Brent

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