Combining Texts

You have chosen 'Two Problems of Epistemology' by Karl Popper, 'Ways Worlds Could Be' by Peter Forrest and 'A Subject with No Object' by JP Burgess / G Rosen

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All the ideas for Existence, or select a subheading:
      A. Nature of Existence
      B. Change in Existence
      C. Structure of Existence
      D. Theories of Reality
      E. Categories