....#####. ..........
###..###.. .#########
##....#... ..########
#..##...## #..#######
......#... ....######
.####...## . .##..####.
..##..#..# . ......##..
#......... . :. #####....#
..######## 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.) ....###..#
.......... ###..#....
########## ##.....###
########## #..###..##
########## ....#....#
########## ###...##..