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