Today’s big ideas come to us from Harvard cognitive psychologist, public intellectual, and bestselling author Steven Pinker, who’s out with a new book called When Everyone Knows That Everyone Knows… Common Knowledge and the Mysteries of Money, Power, and Everyday Life. In it, he shows how public, shared awareness shapes everything from markets and politics to first dates and social media pile‑ons, and why understanding it can make you a sharper decision‑maker and a better collaborator.
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