Re: Quantum Immortality = no second law

From: nichomachus <Steven.Payne.Long.domain.name.hidden>
Date: Sat, 19 Apr 2008 16:10:24 -0700 (PDT)

On Apr 19, 4:26 pm, Brent Meeker <meeke....domain.name.hidden> wrote:
> nichomachus wrote:
> > On Apr 19, 11:51 am, "Telmo Menezes" <te....domain.name.hidden> wrote:
> >>>  Those branches exist even if the experiment is not set
> >>>  up. This follows necessarily from the MWI. Pick any date in history
> >>>  that you like. There must exist fluke branches that have experienced
> >>>  unlikely histories since that time. The example I mentioned previously
> >>>  was no atomic decay since January 1, 1900.
> >> Yes I agree. The second law is just a statistical property, is it not?
> >> I believe it is possible to observe cases where the second law does
> >> not hold, even for a long time. But it's extremely unlikely. That
> >> being said, I would argue that it would be nice if we could come to
> >> the conclusion that the quantum suicider experiment can work even
> >> without the need to resort to an highly unlikely stacking of quantum
> >> choices.
>
> > How would it work? The point of the suicider experiement is that the
> > suicider is able to prove to himself the reality of MWI by forcing
> > himself to experience only an absurdly low probability set of events.
> > Thus, he demonstrates to the few versions of himself who remain the
> > existence of fluke branches, and by extension the truth of the MWI.
>
> > Right, I agree that a universe in which entropy decreases
> > monotonically would be unlikely since it would only happen in those
> > exceedingly rare fluke branches.
>
> If it were also expanding in spacetime it would be exactly like our universe.

I read recently that entropy is increasing, but a measure called
entropy density is decreasing due to inflation. This is how it was
supposed that a universe tending toward maximum entropy could avoid
heat death, as the theoretical entropy max grows along with the
universe.
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Received on Sat Apr 19 2008 - 19:11:51 PDT

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