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The original was posted on /r/todayilearned by /u/UlyssesRambo on 2023-07-12 16:40:22.

Original Title: TIL about the Stoned Ape Theory that claims that the transition from Homo erectus to Homo sapiens and the cognitive revolution was caused by the addition of psilocybin mushrooms, specifically the mushroom Psilocybe cubensis, into the human diet around 100,000 years ago