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Modal Logic and Metaphysics

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Multiple Choice

What is the main difference between alethic and deontic modalities?

  1. Alethic modalities are about what is possible and necessary, while deontic modalities are about what is permitted and forbidden.
  2. Alethic modalities are about what is true and false, while deontic modalities are about what is good and bad.
  3. Alethic modalities are about what is real and unreal, while deontic modalities are about what is ideal and non-ideal.
  4. Alethic modalities are about what is possible and necessary, while deontic modalities are about what is obligatory and permissible.
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