From: nicolaas.vroom@pandora.be   
      
   On Tuesday, 26 June 2018 12:13:16 UTC+2, Tom Roberts  wrote:   
   >   
   > As I said to Mr. Vroom: a clock's tick rate can only be measured   
   > by a co-located and co-moving observer; anything else involves   
   > signals, not just the clock.   
      
   Consider a co-located and co-moving observer A which clock moves   
   a long a certain path from P1 to P2.   
   Consider a second co-located and co-moving observer B which clock   
   moves a long a certain but different path from P1 to P2.   
   When they compare clocks at P2 A's clock has counted 40 ticks   
   and B's clock has counted 30 ticks.   
   What is wrong by claiming that A's clock (for some reason)   
   has ticked faster during the time that both A and B travelled   
   from P1 to P2?   
      
   Nicolaas Vroom   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)