According to David Kahn's *The Codebreakers*, the *Kama Sutra* lists secret writ... | Hacker News

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bluefox on July 16, 2018 | parent | context | favorite | on: Barbie typewriter (2015)

According to David Kahn's The Codebreakers, the Kama Sutra lists secret writing as one of the 64 arts that women should know and practice.

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