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Aristotle's Methods

Much of Aristotle's philosophical thought reflected the influence of Plato, but he also refined and even rejected ideas that his teacher had advocated. He denied the validity of Plato's theory of Forms1, for example, on the grounds that the separate existence that Plato postulated for them failed to make sense. This position typified Aristotle's general preference for explanations based on common sense rather than metaphysics. By modern standards his scientific thought paid relatively limited attention to mathematical models of explanation and quantitative reasoning, but mathematics in his time had not yet reached the level of sophistication appropriate for such work. His method also differed from that of modern scientists because it did not include controlled experimentation. Aristotle believed that investigators had a better chance of understanding objects and beings by observing them in their natural setting than under the artificial conditions of a laboratory. His coupling of detailed investigation with perceptive reasoning served especially well in such physical sciences as biology, botany, and zoology. For example, as the first scientist to try to collect all the available information on the animal species and to classify them, Aristotle recorded the facts about more than five hundred different kinds of animals, including insects. Many of his descriptions represented significant advances in learning. His recognition that whales and dolphins were mammals, for instance, which later writers on animals overlooked, was not rediscovered for another two thousand years. His gynecology, however, in contrast to much of his other learning, was seriously flawed.

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