Combining Texts
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'fragments/reports', 'The Philosophy of Art (2nd ed)' and 'Penguin Dictionary of Philosophy'
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5 ideas
5. Theory of Logic / B. Logical Consequence / 5. Modus Ponens
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Modus ponens is one of five inference rules identified by the Stoics [Chrysippus, by Devlin]
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5. Theory of Logic / B. Logical Consequence / 6. Entailment
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Entailment is logical requirement; it may be not(p and not-q), but that has problems [Mautner]
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5. Theory of Logic / B. Logical Consequence / 7. Strict Implication
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Strict implication says false propositions imply everything, and everything implies true propositions [Mautner]
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5. Theory of Logic / B. Logical Consequence / 8. Material Implication
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'Material implication' is defined as 'not(p and not-q)', but seems to imply a connection between p and q [Mautner]
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A person who 'infers' draws the conclusion, but a person who 'implies' leaves it to the audience [Mautner]
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