On 8/7/2019 6:30 AM, Bruno Marchal wrote:
But then by QM linearity, it is easy to prepare a superposition with orthogonal histories, like me seing a cat dead and me seeing a cat alive, when I look at the Schoredinger cat.

Orthogonal histories would be histories that don't interfere and are not components of a superposition?  Schroedinger's example was a system that starts in a superposition of decayed and not-decayed states and evolves into orthogonal states of dead and alive.  The orthogonal states are not "prepared histories".

Brent

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