On 6/22/2015 2:56 PM, Stathis Papaioannou wrote:


On Tuesday, June 23, 2015, meekerdb <[email protected] <mailto:[email protected]>> wrote:

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


    On 22 June 2015 at 17:33, Bruce Kellett <[email protected]
    <javascript:_e(%7B%7D,'cvml','[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.


What if, while both are asleep, the original is moved to another location and the copy moved to the original's bed?

That would help, but there's an implicit assumption that asleep=mindless. Anesthetic would make a better example. But won't both the original and the copy find himself in a disjoint location incompatible with where he was before?

Brent

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