› added 11 years ago

78

TIL the popular knock pattern, 5 knocks/pause/2 knocks, is called “Shave and a Haircut … Two Bits” and that the tune is highly offensive in Mexico.

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oRVG7 TIL that it took Erno Rubik, inventor of the Rubiks Cube, one month to solve his own invention.
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b9lwE TIL that IBM researchers made the first prototype of a credit card using magnetic tape and cardboard. That prototype sold at auction for over $20,000.
4Xe5b TIL it is a myth that bats use their echolocation to deftly maneuver around one another. High speed cameras show that bats crash into each other all the time.
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