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320 pages, Kindle Edition
First published July 28, 2025
The cognitive revolution, then, was the result of our ancestors’ increased skills and knowledge, leading to the need for the brain to catch up and be able to hold so much information. That cognitive revolution was driven by genetic changes, by selecting for individuals who had the right complement of genes for higher cognition. This relentless selection for higher cognition led to an increase in brain size, until the brain became so large it started to hinder babies’ births.Nothing too controversial there, except she’d spent the better part of an entire chapter earlier arguing that it was the need for the mother to obtain enough calories in our ancestral environments that determined length of gestation; female hips were a red herring, according to her.