Combining Texts

You have chosen 'There is no a Priori' by Michael Devitt, 'The Relation of Sense-Data to Physics' by Bertrand Russell and 'On the Syllogism IV' by Augustus De Morgan

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