Combining Texts

You have chosen 'The Trouble with Possible Worlds' by William Lycan, 'What is Cantor's Continuum Problem?' by Kurt Gdel and 'Commentary on 'Posterior Analytics' by Jonathan Barnes

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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