&&&...&... ..&.&&&&&&
...&..&&.. &.&&&.....
...&&.&.&. .&&..&....
...&.&&&&& &&.&.&&...
...&&&.... &.&&&&.&..
...&..&... . &&&...&&&.
...&&.&&.. . &..&..&..&
&..&.&&.&. . .. &&.&&.&&.&
.&.&&&.&&& 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.) &&&&..&&.&
.&.&&..&.& ....&.&.&&
&&&&.&.&&& &...&&&&&.
&...&&&&.. &&..&....&
.&..&...&. ..&.&&...&
&&&.&&..&& ..&&&.&..&