From Trevor Magnusson
We don’t need the many-worlds interpretation of quantum theory (newscientist.com/article/dn9930). Its prediction that a single universe splits into two when a quantum measurement is made is indistinguishable from a pair of universes that evolve identically up to that point, and then diverge. If the cosmos is truly infinite, that second explanation seems more natural.
Therefore, the result of a quantum measurement does not tell you which universe you have “split off into”, but rather which one you have been in all along.
Hobart, Tasmania, Australia
