On 16-11-2017 07:32, Brent Meeker wrote:
On 11/15/2017 10:23 PM, smitra wrote:
No time to find the right branch in this thread.
Briefly the point I'm making is not really conditional on the details
of quantum mechanics or the MWI, except that I'm assuming multiple
worlds. The point is that in any parallel universes situation where I
exist an I have a lot of hair on my head which I have bothered to
count, I should consider myself to be present in the set of all
universes where the knowledge I have about myself and my surroundings
are the same. So, this then includes copies that are not exact copies,
some will have a different number of hair on their head.
Only when I count the number of hair on my head will I split away from
the copies that find different results. So, this is not per se a
quantum mechanical issue, but you could say that the effectively
classical world where I exist in well defined states where I can do
such things as count the number of hair on my head arises due to
decoherence.
If you forget the number of hairs will your worlds merge again? What
if you're just not thinking about the number of hairs?
Brent
Yes, if you don't think about the number of hairs then you are a
different OM from the one who is thinking about that.. You can use the
formalism in this article
https://arxiv.org/abs/1305.1615
to consistently deal with OMs within QM.
Saibal
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