Work in Progress: Exobiology and the Philosophical Logic of Concepts

Friday 30 September 2022

Joshua Lederberg (23 May1925 —02 February 2008)
  1. Biology that originated on Earth and exists on Earth
  2. Biology that originated on Earth but no longer exists on Earth
  3. Biology that did not originate on Earth but lives on Earth
  4. Biology that did not originate on Earth and does not live on Earth

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