paradigms will often disagree about the list of problems that any candidate for paradigm must resolve. Their standards or their definitions of science are not the same. Must a theory of motion explain the cause of the attractive forces between particles of matter or may it simply note the existence of such forces? Newton’s dynamics was widely rejected because, unlike both Aristotle’s and Descartes’s theories, it implied the latter answer to the question. When Newton’s theory had been accepted, a question was therefore banished from science. That question, however, was one that general
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