cr_thinking_8

cr_thinking_8 - Critical Thinking 8: Assessing Adequacy...

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Critical Thinking 8: Assessing Adequacy July 30, 2009 Kepa Korta kepa.korta@gmail.com
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Tentative inferences Look at those dark clouds on the horizon. We might be in for some rain, so maybe we should head back to the car. Look at those dark clouds on the horizon. It’s going to rain, and if we don’t head back to the car right away, we’re going to get soaked. Look at those dark clouds on the horizon. We might ---or might not--- be in for some rain, so maybe we should head back to the car ---or not. Look at those dark clouds on the horizon. Umm… It’s going to rain, so we should head back to the car.
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Rhetoric (Aristotle) Persuasion - Ethos: character of the arguer - Logos: argument - Pathos: ‘soul’ (beliefs, feelings) of the audience
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Why accept inadequate arguments When the cost of a false negative is low, and the danger of a true positive is high; then you accept it for practical reasons Negative: “Not guilty” Positive: “Guilty” True negative: Not guilty False negative: Guilty True positive: Guilty False positive: Not guilty
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Why accept inadequate arguments Negative: “God doesn’t exist” Positive: “God exists” True negative: God doesn’t exist
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cr_thinking_8 - Critical Thinking 8: Assessing Adequacy...

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