From: fortunati.luigi@gmail.com   
      
   There is a well that reaches exactly the center of the Earth and there   
   are two elevators: one stationary at the bottom of the well (elevator A)   
   and the other in free fall (elevator B).   
      
   Are the two elevators inertial reference systems of the same type or is   
   one reference system more inertial than the other?   
      
   Luigi Fortunati   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)