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.)