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Karl Popper (born July 28, 1902, Vienna, Austria—died September 17, 1994, Croydon, Greater London, England) was an Austrian-born British philosopher of natural and social science who subscribed to anti-determinist metaphysics, believing that knowledge evolves from experience of the mind. Although his first book, Logik der Forschung (1934; The Logic of Scientific Discovery), was published by the Vienna Circle of logical positivists, Popper rejected their inductive empiricism and developmental historicism. After studying mathematics, physics, and psychology...