GULL CALL.                            
  
                                          
 THE  SEAGULL IS  A METAPHYSICS  TRICK; A 
 WORLD-BUILDER'S  SHORTCUT,  TO DEFINE  A 
 SECTION OF REALITY AND IMPLY  ITS  SIZE: 
 PLACE A FLOCK  OF BIRDS AT THE EDGE  AND 
 MAKE  THEIR  CALLS  TESSELATE  OVER  THE 
 ENTIRE VOLUME                            
                                          
 A  SEAGULL  CAN BE  DEFINED BY AS LITTLE 
 AS  FIVE  VERTICES;  SIX  TRIANGLES.  (I 
 WOULD  RECOMMEND  HANDLING IN SWARMS  OF 
 AT LEAST A DOZEN BIRDS.)