There are certain goals which are peculiar and proper to science, without which science does not exist. These are: the accurate and systematic description of public facts; the attempt to correlate sets of these facts in laws; and, through these correlations, the attempt to predict, with some degree of probability, future facts. Many scientific investigations do not try to go beyond these special goals; nor is there any need for them to do so. In the field of historical, social, and political science, as in other sciences, these goals might be, and sometimes are, alone relevant. But without
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