“Out-of-date theories are not in principle unscientific because they have been discarded. That choice, however, makes it difficult to see scientific development as a process of accretion.”

—  Thomas Kuhn , book The Structure of Scientific Revolutions

The Structure of Scientific Revolutions (1962), I. Introduction: A Role of History

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Thomas Kuhn 27
American historian, physicist and philosopher 1922–1996

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