Combining Texts

You have chosen 'Realism in Mathematics' by Penelope Maddy, 'Real Natures and Familiar Objects' by Crawford L. Elder and 'Psychology from an empirical standpoint' by Franz Brentano

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