,,@@@@,,@@                                          ,@@,,,@,@@
,@,@@@,@,@                                          @,@,,@@,,@
,@,,@@,@,@                                          @,@,@,@,@@
,@,@,@,@,@                                          @,@,@,@,,@
,@,@,@,@,@                                          @,@,@,@,@@
,@,@,@,@,@                                     ,    @,@,@,@,,@
,@,@,@,@,@                                        , @,@,@,@,@@
,@,@,@,@,@                                    , ,,  @,@,@,@,,@
,@,@,@,@,@ 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.)                 @,@,@,@,,@
,@,@,@,@,@                                          @,@,@,@,@@
,@,@,@,@,@                                          @,@,@,@,,@
,@,@,@,@,@                                          @,@,@,@,@@
,@,@,@,@,@                                          @,@,@,@,,@
,@,@,@,@,@                                          @,@,@,@,@@