Combining Texts

You have chosen 'Conceptual truth and metaphysical necessity' by Robert C. Stalnaker, 'A Universe from Nothing' by Lawrence M. Krauss and 'Are there propositions?' by Gilbert Ryle

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