Escher Waterfall Machine Solved(boingboing.net)
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Escher Waterfall Machine Solved
http://www.boingboing.net/2011/02/18/is-this-how-the-esch.html
1 comments
Unfortunately the assertion that "liquid never touches B" is false (see a surge in the flow at 1:06 that does reach it). Therefore I don't reckon the break can be where they assume it to be.