====== COPY  ======

  * copy , imitate 
  * duplicate , 
  * mental copying 
    * DIRECT REALISM 
      * 2d copying , virtual image 
      * 3d virtual image , 3d virtual world , 3D copying 
  * physical copying 
    * 2d copying , pictures , art , drawing 
    * statues , 3d models 
  * Artificial copying 
    * 3D computational models 
  * Molecular copying 
    * genetic copying , self assembling molecules