###¨##¨¨¨#                                          #¨#¨¨¨#¨¨#
¨¨¨##¨#¨¨#                                          ####¨¨##¨#
#¨¨#¨###¨#                                          ¨¨¨¨#¨#¨##
¨#¨###¨¨##                                          ¨¨¨¨#####¨
¨###¨¨#¨#¨                                          ¨¨¨¨#¨¨¨¨#
##¨¨#¨####                                     ¨    ¨¨¨¨##¨¨¨#
¨¨#¨###¨¨¨                                        ¨ #¨¨¨#¨#¨¨#
#¨###¨¨#¨¨                                    ¨ :¨  ##¨¨####¨#
¨##¨¨#¨##¨ 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.)                 ¨¨###¨##¨#
##¨#¨#¨¨¨¨                                          #¨#¨¨##¨##
¨¨#####¨¨¨                                          ¨###¨#¨##¨
¨¨#¨¨¨¨#¨¨                                          ##¨¨####¨#
#¨##¨¨¨##¨                                          ¨¨#¨#¨¨¨##
¨##¨#¨¨#¨#                                          ¨¨####¨¨#¨