When Everyone Knows That Everyone Knows...: Common Knowledge and the Mysteries of Money, Power, and Everyday Life by Steven Pinker book cover

Download When Everyone Knows That Everyone Knows...: Common Knowledge and the Mysteries of Money, Power, and Everyday Life by Steven Pinker PDF

By: Steven Pinker

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  • CategoryPsychology
  • LanguageEnglish
  • Pages384
  • Published2025
  • File size6.4 MB
  • FormatPDF
  • ISBN9781668011577

Key ideas from the book

  • Common knowledge involves knowing something and knowing that others know it too.
  • Shared awareness helps people coordinate conventions, choices, and social encounters.
  • Signals such as laughter, tears, blushing, and eye contact can create or convey common knowledge.
  • People may use indirectness or pretense to keep something from becoming mutually acknowledged.
  • Common knowledge can help explain group behavior in settings ranging from financial markets to social media.

About When Everyone Knows That Everyone Knows...: Common Knowledge and the Mysteries of Money, Power, and Everyday Life by Steven Pinker

Steven Pinker examines common knowledge: not just what people know, but what they know that others know. He explains why this shared awareness helps people coordinate choices and social interactions, from following conventions to arranging meetings and forming relationships.

The discussion also considers why people sometimes avoid making knowledge fully public, and how signals such as laughter, tears, eye contact, and blunt speech can shape what is understood. Examples range from financial bubbles and political movements to social media shaming and the unease of a first date, with novels, jokes, films, and other cultural forms used to illuminate the subject. Readers interested in psychology, communication, and the logic behind everyday social behavior will find a wide-ranging account of how shared knowledge affects group life.

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