In general if the probability for the conclusion to

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Unformatted text preview: to follow from the premises is greater than 50% the argument is strong. How to test for strength Assume the premises are true. Based on this assumption ask: Is the conclusion probably true? If the answer is yes the argument is strong. If the answer is no the argument is weak. Cogency Addresses the actual truth of the premises. To determine cogency ask: Are the premises REALLY true? If the answer is yes the argument is cogent. If the answer is no the argument is uncogent. Weak arguments are ALWAYS uncogent. Total evidence requirement In cogent inductive arguments the premises must not only be true but also not ignore any important evidence that would entail a different conclusion. Do not confuse the terms! Deductive Valid/Invalid Sound/Unsound Inductive Strong/Weak Cogent/Uncogent...
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This note was uploaded on 05/05/2008 for the course PHIL 311 taught by Professor D.c. during the Spring '07 term at University of Louisville.

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