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Why did the field move from thinking rationally to acting rationally?

  • A.Correct inference is often too slow or impossible under uncertainty
  • B.Logic was found to contain contradictions that could not be resolved
  • C.Acting rationally requires less computing power in every case
  • D.Human beings were shown never to reason logically at all

Answer: A

Proving the right thing to do may be intractable, and in many situations no proof is available at all, yet an agent must still act, so the criterion shifted to doing the best it can with what it knows. Probability and decision theory replaced logic as the central formalism for uncertain domains. Logic is consistent, computational cost varies, and human reasoning is a separate question. A criterion that can always be applied is more useful than one that is sometimes unattainable.

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