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Explore the hidden mechanisms of common knowledge and its profound influence on human coordination in this 14-minute TED talk by experimental cognitive scientist Steven Pinker. Discover how shared understanding serves as the invisible foundation for everything from casual social gatherings to complex market systems and international diplomatic relations. Learn why authoritarian leaders fear blank protest signs, understand the strategic communication patterns of central bankers, and examine how explicitly stating unspoken social truths can damage relationships. Gain insights into the psychological processes that allow humans to anticipate each other's thoughts and behaviors, while examining what happens when these shared social norms begin to shift or break down. Delve into the fascinating intersection of cognitive science, economics, and social psychology to better understand how collective understanding shapes our world.
