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......,«:= 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.)                 «,........
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