From: helbig@asclothestro.multivax.de   
      
   In article <0d690276-878e-46c1-829e-7e461293e71b@googlegroups.com>,   
   Nicolaas Vroom  writes:   
      
   > The physical change in the performance (ticking rate) of the moving clock   
   > is caused by the forces enforced on the clock.   
      
   In the twin paradox, the only force is the force of acceleration of the   
   twin who journeys.  But the magnitude of the effect is greater the   
   greater the journey FOR THE SAME ACCELERATION.  Also, if there was some   
   physical change, it should be possible to measure it in some other way.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)