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The joke is indeed the false syllogism: https://en.wikipedia.org/wiki/Syllogism#Syllogistic_fallacies https://en.wikipedia.org/wiki/Syllogism#Syllogistic_fallac

• yreg 4y ago
  It's also the cartesian ontological argument for the existence of God. >The God is perfect. >If the God did not exist it wouldn't be perfect. >Therefore God must exist. https://en.wikipedia.org/wiki/Ontological_argument#Ren%C3%A9_Descartes https://en.wikipedia.org/wiki/Ontological_argument#Ren%C3%A9...
  • afiori 4y ago
    The ontological argument is a valid deduction > A, B implies not A thus not B The problem is that you have to prove both A and (B implies not A), without self referentially assuming it in the first place,
    • quickthrower2 4y ago
      Sounds like proof by contradiction
      • quickthrower2 4y ago
        Also the definition of an alibi!