Nonmonotonic reasoning in this sense is just a special case of a general scientific methodology; its important ingredients are abduction and explanation
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Of course the issue of productivity is just a special case of a more general phenomenon, namely the positive effect of cohesion on the achievement of group objectives.
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“If my brains are being scrambled, then perhaps contraposition is invalid or 2 + 2 doesn’t equal 4” is just a special case of the impossibility of thinking “If my brains are being scrambled, none of my inferences are valid, including this one.”
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