Almost nothingis my opinion. But I am sure somebody else will be able to improve on that
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An Egg ,D,
Wed 27 Jan 2010, 22:58,
archived)
well sometimes you'd be surprised what stuff does.I made a physical analogue of this ages ago when I was trying to invent a constant engagement continuously variable transmission. Which is supposed to be impossible, but I'm telling you it's not.
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Moon Girl Technologies horrendous beanbag,
Wed 27 Jan 2010, 23:16,
archived)