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