On 12/17/2017 7:32 AM, Bruno Marchal wrote:
  But in fact the box is not isolated.

Oh? Just isolate the whole universe. That should be easy.




The box too is interacting with the environment.  So it's like the Zeno effect.  Although there is a probability at each impact of producing a coherent tails component, those components don't sum to a finite component over a finite number of impacts.

The Zeno effect makes you "staying statistically" in the universe, like the non-isolation of the box makes you impossible to have access to the universe where the coin felt on the opposite side, but without collapse, the superposition can simply never disappear.

I can never disappear, but it cannot reach a significant probability for tails in several ages of the universe.

Brent

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