#¨¨¨¨¨¨¨##                                          ¨¨###¨¨#¨#
##¨¨¨¨¨¨##                                          ¨¨#¨##¨¨¨#
¨##¨¨¨¨¨#¨                                          ¨¨¨¨###¨¨#
¨###¨¨¨¨¨¨                                          #¨¨¨#¨##¨¨
¨#¨##¨¨¨¨¨                                          ¨#¨¨¨¨###¨
¨¨¨###¨¨¨¨                                     ¨    ¨¨#¨¨¨#¨##
#¨¨#¨##¨¨¨                                        ¨ ¨¨¨#¨¨¨¨##
##¨¨¨###¨¨                                    ¨ ,¨  ¨¨¨¨#¨¨¨#¨
###¨¨#¨##¨ 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.)                 #¨¨¨¨¨¨#¨¨
¨#¨##¨¨¨¨#                                          ##¨¨¨¨¨¨#¨
¨¨¨###¨¨¨¨                                          ###¨¨¨¨¨¨#
#¨¨#¨##¨¨¨                                          #¨##¨¨¨¨¨¨
¨#¨¨¨###¨¨                                          ¨¨###¨¨¨¨¨
¨¨#¨¨#¨##¨                                          ¨¨#¨##¨¨¨¨