##¨##¨¨¨¨#                                          ####¨¨#¨##
¨¨##¨#¨¨¨#                                          #¨¨¨#¨###¨
¨¨#¨###¨¨#                                          ¨#¨¨###¨¨#
#¨###¨¨#¨#                                          ¨##¨#¨¨#¨#
¨##¨¨#¨###                                          ##¨###¨###
##¨#¨###¨¨                                     ¨    #¨##¨¨##¨¨
#¨####¨¨#¨                                        ¨ ###¨#¨#¨#¨
###¨¨¨#¨##                                    ¨ ^¨  ¨¨¨#######
¨¨¨#¨¨###¨ 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.)                 ¨¨###¨#¨¨#
¨#¨¨#¨##¨¨                                          ¨¨#¨¨###¨#
###¨###¨#¨                                          #¨##¨#¨¨##
¨¨¨##¨¨###                                          ¨##¨###¨#¨
¨¨¨#¨#¨#¨¨                                          ¨#¨##¨¨###
#¨¨######¨                                          ####¨#¨#¨¨