Futility Closet

An idler's miscellany of compendious amusements

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Straight and Narrow

http://commons.wikimedia.org/wiki/File:Caf%C3%A9_wall.svg
Image: Wikimedia Commons

An optical illusion.

The horizontal lines are parallel.

April 7, 2006July 18, 2013 | Entertainment · Oddities · Science & Math · Trivia

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Futility Closet is a collection of entertaining curiosities in history, literature, language, art, philosophy, and mathematics, designed to help you waste time as enjoyably as possible.

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