The Language Snakes on Carl Sagan’s Plane

In my last post, I mentioned that Matt Kaplan’s book Medusa’s Gaze and Vampire’s Bite pointed me to an interesting claim made by Carl Sagan. Early in the book, Kaplan mentions in a footnote that Sagan claimed there might be a link between snakes and the sh-sound that people make when they want to command attention or silence. The book Kaplan refers to is Sagan’s Dragons of Eden (1977) and in it Sagan postulates the idea in the form of a question (that he doesn’t answer):

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