Combining Texts

Ideas for 'On What Grounds What', 'The German Ideology' and 'Rules for the Direction of the Mind'

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2 ideas

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]

10. Modality / E. Possible worlds / 1. Possible Worlds / b. Impossible worlds

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Belief in impossible worlds may require dialetheism [Schaffer,J]