Combining Texts

You have chosen 'Rationality' by Gilbert Harman, 'Definitiones cogitationesque metaphysicae' by Gottfried Leibniz and 'Causation in a Physical World' by Hartry Field

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All the ideas for Science, or select a subheading:
      A. Basis of Science
      B. Scientific Theories
      C. Induction
      D. Explanation