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hard science vs. soft science

noun
  1. any of the natural or physical sciences, as chemistry, biology, physics, or astronomy, in which aspects of the universe are investigated by means of hypotheses and experiments.
noun
  1. any of the specialized fields or disciplines, as psychology, sociology, anthropology, or political science, that interpret human behavior, institutions, society, etc., on the basis of scientific investigations for which it may be difficult to establish strictly measurable criteria.

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