Quotes, aphorisms, famous sentences
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When, in the development of a natural science, an individual or group first produces a synthesis able to attract most of the next generation's practitioners the older schools gradually disappear. In part their disappearance is caused by their members conversion to the new paradigm … But there are always some men who cling to one or another of the older views, and they are simply read out of the profession, which thereafter ignores their work. The new paradigm implies a new and more rigid definition of the field. Those unwilling or unable to accommodate their work to it must proceed in isolation or attach themselves to some other group (Thomas Kuhn, The Structure of Scientific Revolutions)