Combining Texts

You have chosen 'Truth and the Past' by Michael Dummett, 'Principles of Nature and Grace based on Reason' by Gottfried Leibniz and 'On the General Idea of Proof Theory' by Dag Prawitz

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