Combining Texts

You have chosen 'Realism in Mathematics' by Penelope Maddy, 'Coherence: The Price is Right' by Paul Thagard and 'On the Foundations of Logic and Arithmetic' by David Hilbert

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All the ideas for Modality, or select a subheading:
      A. Necessity
      B. Possibility
      C. Sources of Modality
      D. Knowledge of Modality
      E. Possible worlds