Decius comments on Decision Theories, Part 3.75: Hang On, I Think This Works After All - Less Wrong

23 Post author: orthonormal 06 September 2012 04:23PM

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Comment author: Decius 09 September 2012 07:58:44PM 1 point [-]

Consider the statement A "□A -> B and □B -> A" and the statement B "□A -> B and □B -> A and false"

Why are those two statements not provable in every system in which they can be written?