The Leaning Tower of Morality — my latest post at Ribbonfarm https://www.ribbonfarm.com/2017/11/28/the-leaning-tower-of-morality/ …pic.twitter.com/auVwXM2VBd
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I'm not sure. Probably a lot of factors necessary to account for how civilized we've become. (Sorry, not a particularly helpful answer I know.)
Must've been all those psychedelics those apes ate. 
This is a reference to Terence McKenna Stoned Ape Hypothesis. That consciousness arose as a consequence of apes consuming psychedelics.
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