The syllogism
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•All men are mortal
•Socrates is a man
•Socrates is mortal
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Generalized syllogism
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•P1
•P2
•C
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Validity of an argument 1
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•All philosophers are thoughtful
•Kant is a philosopher
•Kant is thoughtful
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Validity of an argument 2
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•All foos are bar
•Yahoo is a foo
•Yahoo is bar
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Validity of an argument 3
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•All As are B
•C is an A
•C is B
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Validity vs. truth
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•All human beings are good
•Saddam Husein was a human being
•Saddam Husein was good
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Consistency of meaning 1
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•John shows great enthusiasm in these paintings
•These paintings indicate inspiration from God
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Consistency of meaning 2
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•John shows great X in these paintings
•These paintings indicate X
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Consistency of meaning 3
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•John shows great Y in these paintings
•These paintings indicate X
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