If relativity explains gravity why do we need a quantum theory of it?   
      
   [[Mod. note -- General relativity explains *classical* gravity, but   
   doesn't incorporate quantum mechanics.  As Wikipedia puts it,   
   https://en.wikipedia.org/wiki/Quantum_gravity   
   > No theory has yet proven successful in describing the general   
   > situation where the dynamics of matter, modeled with quantum   
   > mechanics, affect the curvature of spacetime.   
   That is the basic motivation for why we need a theory of quantum   
   gravity.   
   -- jt]]   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)