

Steven Pinker on How Common Knowledge Rules Our Lives
43 snips Sep 29, 2025
Steven Pinker, a renowned cognitive psychologist and linguist from Harvard, shares fascinating insights about his book on common knowledge. He explains how it underlies everything from relationship dynamics to high-stakes negotiations. Discover how public signals can quickly create shared awareness and why authoritarian regimes fear coordination. Pinker also delves into the impact of comedy on common knowledge, offering humorous takes on serious subjects like political violence and relational tactics. Tune in for a thought-provoking conversation filled with intriguing observations!
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What Common Knowledge Really Is
- Common knowledge means everyone knows X, and everyone knows that everyone knows X ad infinitum.
- Public, conspicuous events can generate that infinite-seeming state in one psychological leap.
Public Events Create Coordination Shifts
- A widely watched public event can turn private suspicions into irresistible common knowledge.
- Once common knowledge forms, coordination and collective responses change overnight.
Emperor's New Clothes Example
- Pinker uses The Emperor's New Clothes to illustrate common knowledge's social power.
- The boy's shout made everyone realize others also knew, and the emperor's authority collapsed.