Combining Texts
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'Commentary on 'De Anima'', 'Rules for the Direction of the Mind' and 'Law and Causality'
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3 ideas
10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals
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Ramsey's Test: believe the consequent if you believe the antecedent [Ramsey, by Read]
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10. Modality / B. Possibility / 8. Conditionals / e. Supposition conditionals
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Asking 'If p, will q?' when p is uncertain, then first add p hypothetically to your knowledge [Ramsey]
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10. Modality / C. Sources of Modality / 4. Necessity from Concepts
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3+4=7 is necessary because we cannot conceive of seven without including three and four [Descartes]
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