Is medicine better served by science or by art? Science, of course. But which science? Science is distinguished not by its object of study, but by its method. The scientist looks at an object selectively, to make a hypothesis possible; devises a hypothesis; brings the object under his control; isolates the object, or part of it; measures it; manipulates it; and measures again. Selective examination of the results allows subsidiary hypotheses to be developed. A body of knowledge is developed by iteration, in which an ever finer, and more selective, or restrictive, gaze is used./.../
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