it's certainly a space-filling curve problem, but it's not the traveling salesman problem. you aren't just trying to avoid revisiting nodes -- you're trying to maximize the *angle* between edges when you visit the node, to avoid overlap while you're turning the mower. which is at least an interesting wrinkle in the problem.
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you certainly can call someone a "fatass". there is no law against it. you can call someone anything you want, but in return someone might call you an "asshole", and they might be right.
is there a line between political correctness and politeness? or do you think we need to get rid of that too?
and fwiw, I agree, smith wasn't exactly forthcoming with the details of the case (he was switching flights, only single seat available, etc) and SW has acquitted themselves pretty well from a PR perspective. i think the man just got a little stung by a humiliating experience and wanted to rant a little.