From: pvalev@yahoo.com   
      
   In 1905 Einstein's potential opponents readily agreed that the speed of light   
   is independent of the speed of the source: that was an ether concept. However   
   it followed logically that the speed of light is absurdly independent of the   
   speed of the observer    
   (receiver) as well - potential opponents got confused, frustrated, developed   
   split personality disorder and Einstein triumphed:   
      
   Olivier Darrigol, The Mystery of the Einstein-Poincaré Connection: "It is   
   clear from the context that Poincaré meant here to apply the postulate [of   
   constancy of the speed of light] only in an ether-bound frame, in which case   
   he could indeed state that    
   it had been "accepted by everybody." In 1900 and in later writings he defined   
   the apparent time of a moving observer in such a way that the velocity of   
   light measured by this observer would be the same as if he were at rest (with   
   respect to the ether).    
   This does not mean, however, that he meant the postulate to apply in any   
   inertial frame. From his point of view, the true velocity of light in a moving   
   frame was not a constant but was given by the Galilean law of addition of   
   velocities." https://www.   
   jstor.org/stable/10.1086/430652   
      
   https://render.fineartamerica.com/images/images-profile-flow/400   
   images-medium-large/split-personality-computer-artwork-david-mack.jpg   
      
   Pentcho Valev https://twitter.com/pentcho_valev   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)