Combining Texts

You have chosen 'The Case for Closure' by John Hawthorne, 'Frege's Concept of Numbers as Objects' by Crispin Wright and 'Il Saggiatore ('The Assayer')' by Galileo Galilei

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