Lecture 2 - Lecture 2 What is Science? Science is what...

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Lecture 2 What is Science?
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Science is what scientists do … Theory – experiment – mathematics (models) Observation and manipulation Biology – Chemistry – Physics
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Tremendous growth in science Numbers of practitioners: 150,000 in 1950 2,700,000 in 2000 Number of fields: astronomy to zoology 1-2 ~1600, >7,500 today
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Nature of Science Science is a means of acquiring testable knowledge results are not dependent on the tester Scientific knowledge is always provisional, and very often probabilistic there is no certainty, and what is true today may not be valid tomorrow
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Theories are approximations, but have a domain of validity Proving a theory “wrong” (if the theory was properly generated) means finding a part of the data set where the theory doesn’t work Rational process of inquiry based in observation Science is “process” not a set of results
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Science is replicable Implication: it is objective not subjective results are not dependent on particular
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Lecture 2 - Lecture 2 What is Science? Science is what...

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