###.#.#.##                                          #...#.####
..######..                                          #..###....
.#.....#..                                          #.#..#....
##....##..                                          ###.##....
.#...#.#..                                          ..##.#...#
##..####..                                     .    .#.###..##
.#.#...#..                                        . ###..#.#..
####..##.#                                    . ~.  ..#.####..
...#.#.### 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.)                 #..##....#
.###.#.###                                          #.#.#...#.
#..####..#                                          #####..##.
#.#...#.#.                                          ....#.#.##
###..#####                                          ...#####..
..#.#....#                                          ..#....#.#