Combining Texts

You have chosen 'There are no ordinary things' by Peter Unger, 'An Axiomatization of Set Theory' by John von Neumann and 'A Plea for Excuses' by J.L. Austin

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