One of the most important sources of fluency is familiarity. A familiar idea is simpler to process and place in the mental map. When people see an artwork that reminds them of something they’ve been taught is famous, they feel the thrill of recognition and attribute the thrill to the painting itself. When they read a political argument that reflects their biases, it fits snugly into their story of how the world works. Thus, familiarity, fluency, and fact are inextricably linked. “That idea sounds familiar,” “That idea feels right,” and “That idea is good and true” spill into each other in one
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