From: seki.hajime01@gmail.com   
      
   On Friday, February 2, 2018 at 4:55:46 PM UTC+9, Jos Bergervoet wrote:   
   >   
   > You could say that those believing in objective wave function   
   > collapse actually do claim so! Their collapse probabilities cannot   
   > follow from local variables (Bell's inequality proves so) and in   
   > particular for the spin-correlated 2-particle case they require   
   > knowledge about the other measurement taking place at large   
   > distance. So for these people (who believe this, I mean) it might   
   > be welcome if SEKI could help them. (Whether they would really   
   > pray on their knees for him is a matter of speculation, I'd say..)   
   >   
   > For those who believe that a measurement merely leads to further   
   > entanglement of the measured particle with the measuring device,   
   > the problem does not exist. This entanglement occurs due to the   
   > unitary time evolution which can simply be calculated for each   
   > particle of the pair without knowing what the other does. For one   
   > particle the other is of course the natural "purifying state",   
   > but one does not have to know the purifying state, one can simply   
   > assume that one exists and compute everything locally.   
   >    http://en.wikipedia.org/wiki/Purification_of_quantum_state   
   >   
      
   You mentioned entanglement, which postulates two-particle state.   
      
   Consider a photon pair.   
   Quantum wave of paired photon system (if any) is to swell at twice   
   the speed of light, and is to metamorphose instantaneously.   
   I cannot believe in such a system.   
      
   I suppose each of paired photons travels independently of each other   
   after pair creation.   
   Considering that no or, at most, negligible interaction is possible   
   between photons, and that no restriction is imposed on superposition   
   of quantum waves of photons, which are bosons, isn't it acceptable?   
      
   So, I consider that any correlation between paired photons is   
   determined at the point of pair creation.   
      
   Thanks.   
      
   SEKI   
      
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