Combining Texts

You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Logical Foundations of Probability' by Rudolph Carnap and 'Truth and Truthmakers' by David M. Armstrong

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All the ideas for Natural Theory, or select a subheading:
      A. Speculations on Nature
      B. Natural Kinds
      C. Causation
      D. Laws of Nature