On 16 Jan 2014, at 22:31, LizR wrote:
Everything else I've said on this subject has been in response to
people trying to argue that physics is not time symmetric. So far
all such arguments have been a variant on "the second law says so"
and my response has been a variant on "the second law emerges above
the level at which we can detect time symmetry". (Plus I've invoked
boundary conditions on the universe to explain how the second law
can arise from time symmetric physics...)
I agree a priori with you on this.
I can agree also that this time-symmetry (of QM, which time
symmetrical) + boundary special condition can be consistent with QM +
one reality (although weird and not satisfying)
I think pure QM (without boundary condition, that is MW) is even more
symmetrical, and conceptually more simple, and that your point go
through it.
The boundary condition a still a way to select a dream as more real
than other dream, and of course, does or make sense in comp, unless
the numbers conspire in making the whole geography into physics which
is not reasonable.
Bruno
http://iridia.ulb.ac.be/~marchal/
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