Comparative psychologist Michael Tomasello, in his 1999 book The Cultural Origins of Human Cognition, popularized the now widely adopted metaphor of the "ratchet effect" in human cultural evolution:
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Imitation and the Ratchet Effect
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Comparative psychologist Michael Tomasello, in his 1999 book The Cultural Origins of Human Cognition, popularized the now widely adopted metaphor of the "ratchet effect" in human cultural evolution: