Why Did Our Brains Shrink 3000 Years Ago?

Many Minds | 1 February 2022 | 0h 46m | Listen Later | iTunes | Spotify
Interview with Jeremy DeSilva about when and why human brains decreased in size. Describes the research to establish that human brain size decreased about 3,000 years ago. Discusses the possible explanations, including one by analogy with social insects, that brain size decreased, reducing the energy cost, with the externalisation of knowledge in human societies.

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