Combining Texts

You have chosen 'Changes in Events and Changes in Things' by Arthur N. Prior, 'Noneism or Allism?' by David Lewis and 'Aristotle's Theory of Substance' by Michael V. Wedin

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All the ideas for Science, or select a subheading:
      A. Basis of Science
      B. Scientific Theories
      C. Induction
      D. Explanation