Combining Texts

You have chosen 'Mind and Its Place in Nature' by C.D. Broad, 'The Barcan Formula and Metaphysics' by Ori Simchen and 'The Sign of Four' by Arthur Conan Doyle

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