Gödel, Escher and Bach’s Crab Canon

This piece of youtubery illustrates the fascinating properties of Johann Sebastian Bach‘s Crab Canon (or, more precisely, the first of ten canons in The Musical Offering) where he takes a complicated theme and then proceeds to play it backwards, forwards, and both in unison.

This little piece is well known to anyone who has read Gödel, Escher, Bach: An eternal golden braid, which should be required literature on, well, any course, really. As my old boss Erling Iversen used to say, there are two kinds of IT people: Those who had read Hofstadter’s Gödel, Escher, Bach and those who should. Consider yourself tapped.

(Hat tip to Joho).


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