On Wednesday, March 25, 2020 at 9:13:43 AM UTC-5, ben...@hotmail.com wrote:   
   > On Monday, March 23, 2020 at 8:25:23 PM UTC, richali...@gmail.com wrote:   
   > > On Thursday, March 19, 2020 at 11:53:17 AM UTC-5, ben...@hotmail.com   
   ...   
   > If an observer saw Alice's measurement for the positron travelling backwards   
   > in time to the Source, then that observation/measurement would render the   
   > pair of particles to be no longer entangled, and so not a pair entitled to   
   > be in a Bell experiment.  I admit that I either do not understand 'weak   
   > measurement' or believe it to be a measurement which is not provable to be   
   > on a single particle.  A non-weak measurement to me is one  which changes   
   > the spin sign of a particle.   
   >   
      
   I am not talking about time reversal.  There is no attainable speed   
   at which an observer would see a positron travelling from Alice   
   back to the source.   
      
   What I mean by retro-causality is that a particle (photon or a   
   massive particle) will not be emitted until, by some as yet mysterious   
   process, there is a definite location in the future for it to end   
   up.  As I said, this is a very controversial idea, but not unrecognized,   
   and I hesitate to assert it too forcefully as there is much unknown   
   about how this would work.   
      
   One justification for it is inhibition of emission of photons by   
   atoms in certain situations.  For example, an atom in a resonant   
   cavity that does not support a mode at the photon frequency will   
   not emit that photon.  Emission is suppressed.  This is related to   
   so called "hole burning" in lasers where a population of atoms that   
   can emit a wide range of wavelengths will show dips in the population   
   on the resonant modes of the laser cavity.  I have read of experiments   
   demonstrating this in a more direct way, where the decay of atomic   
   states is extended when atoms are in a suitable cavity.   
      
   What I'm suggesting is something very similar to what Feynman and   
   Wheeler were suggesting in the early 1940s where the emission of a   
   photon is a process that involves a transaction between the emitter   
   and absorber.  The "retro-causality" reference here is that if that   
   future absorber atom does not exist, the photon will not be emitted.   
   There is no transmission of information from future to past, only   
   that there exists, somewhere in the future, something capable of   
   accepting that photon.   
      
   Rich L.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)