Combining Texts

You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Prologue to Ordinatio' by William of Ockham and 'What is Critique?' by Michel Foucault

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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