From: tjroberts137@sbcglobal.net   
      
   On 9/7/22 6:35 AM, Richard Livingston wrote:   
   > [...] Seriously, isn't collapse a part of reality, or required by   
   > reality?   
      
   No. There are interpretations of QM that do not involve any "collapse of   
   the wavefunction". See, for example:   
      
   	Ballentine, _Quantum_Mechanics:_A_Modern_Development_.   
      
   The basic idea is that whenever one makes a measurement of a quantum   
   system, that necessarily involves coupling it to a MUCH LARGER measuring   
   instrument, and the comparatively tiny quantum system is "forced" into   
   an appropriate eigenstate by that coupling.   
      
   Tom Roberts   
      
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