Combining Texts

You have chosen 'Thinking About Mathematics' by Stewart Shapiro, 'On the Source of Necessity' by Ross P. Cameron and 'Metaphysical conseqs of principle of reason' by Gottfried Leibniz

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