On 1/21/2014 4:50 PM, LizR wrote:
It seems to me that differentiation is local, and spreads slowly, and that there is
always going to be some remerging (but only in proportion to the chances of entropy
reversing). The an atom starts in a superposition of decayed and non-decayed. Now a cat
is in a superposition of alive and dead. Now an experimenter is in a superposition of
having seen an alive and dead cat... now everyone who reads "Nature" is in a
superposition ... but none of this affects Jupiter for a long time,
Does it? Suppose there's an electron on Jupiter that was entangled in a singlet state
with an electron on Earth and the electron on Earth just got it's spin measured? MWI may
be able to model this with a local hidden variable, but in THIS world it looks like FTL
influence - and it can go a lot further than Jupiter, e.g. the CMB.
Brent
it may be centuries before it has any noticeable effect, particularly if in both
branches human civilisation collapses, so there is less chance of us sending things to
Jupiter ... and it may be millions of years before any other stars in our galaxy are
affected. Maybe as history goes on and civilisations come and go and new species evolve,
some of the branches that were split by the experiment merge again, and eventually the
universe gets back to where it was originally, in terms of the degree of splitting. Of
course it might be a looooong time - say a googol years - before all traces of human
influence vanish completely.
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