On 6/22/2015 3:11 AM, Stathis Papaioannou wrote:


On 22 June 2015 at 17:33, Bruce Kellett <[email protected] <mailto:[email protected]>> wrote:

    Stathis Papaioannou wrote:



                The "closest continuer" idea is wrong on many counts. Both
                copies consider themselves to be the original - both are wrong
                in your view. But if one copy was 0.1% different from the
                origina, that copy would not be the continuation of the
                original, despite thinking that he was, just a bit taller and a
                bit happier for the experience. On the other hand, if one copy
                was 1% different and the other 0.1% different, the 0.1% copy
                would be a continuation of the original. And if the 0.1% copy
                was in a coma when created, the 1% copy would be the continuer
                until the 0.1% copy was revived.

            How are you going to measure these fine differences? If there is a
            tie according to any appreciable measurement, then there are two new
            persons. Don't forget that the duplication is only accurate at the
            level of replacement, which is never assumed to be exact -- we     
cannot
        have exact copies because of the quantum cloning
            restrictions. The odd difference in the number of atoms in your big
            toe is not a relevant difference.

        It's easy to measure differences. One of the new JC's is taller and 
better
        looking. Naturally, he claims that he is the true JC, but improved.


    What he claims is irrelevant. The copies diverge almost instantaneously, so 
there
    are essentially always two new persons in these scenarios. If they are made 
to be
    different by the machine, then there is no duplication!


I diverge from my previous self from moment to moment in ordinary life, but I still consider that I remain me. If I woke up tomorrow taller because I had a growth spurt during the night I would still consider that I was me; yet by the "closest continuer" theory, I would stop being me if a copy that hadn't grown was made somewhere else.

I think waking up somewhere else would count strongly against being the closest 
continuation.

Brent

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