Combining Texts

You have chosen 'The Tenseless Theory of Time' by J.J.C. Smart, 'What is Mathematical Truth?' by Hilary Putnam and 'Intro to 'The Reason's Proper Study'' by B Hale / C Wright

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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