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.)