i wrote the generator.
dmr or rhm wrote the comment.
it came about after one of the first
drafts of a graphical pool game.
the balls were points and the test
was the bouncing off the edge of
the pool table. the balls were placed
at "random" places on the table,
they were started with "random"
directions and "random" velocities.
frictionless it ran forever.
after many minutes, from a mess
of dots, they form a line, later a couple
lines, later several points, and finally
after a large fraction of an hour, all the
balls would converge on a single dot.
that version of the program was saved
with the name "wierd" (spelling on purpose).
i have no idea if it exists now.