Combining Texts

You have chosen 'Parmenides' by Plato, 'The Blank Slate' by Steven Pinker and 'Causal Powers' by Harr,R./Madden,E.H.

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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