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Here's David Wallace explaining to a nonspecialist audience why the argument for the existence of many universes is inescapable.  http://www.richannel.org/the-long-earth-multiverse-physics 
In just 20 minutes, starting from nothing. A tour de force.
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Vary Nice.  I have always had a hard time visualizing a quantum interference  experiment
 
Easily escaped: The photon was in a closed system, absorbed the moment it was released, relativistically. It 'knew' what it was computing, and returned the quickest/most probable result.
(x^2 = x*x = self-interference <=> sqrt(x^2) = +/- x = uncertainty)
 
I M OK DAVID FOR MY CYBERNETIC BRAIN WHEN YOU WANT ANSWER ME
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