http://science.slashdot.org/story/12/05/17/0134254/worlds-subways-share-common-mathematical-structure
01:39 <@GUMI-chan> the only exception to this is LA.
01:40 <@GUMI-chan> however
01:40 <@GUMI-chan> LA DOES have this sort of setup with its freeway system.
01:40 <@GUMI-chan> hmm
01:40 <@GUMI-chan> actually that's pretty interesting.
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