Combining Texts
Ideas for
'The Sign of Four', 'A Survey of Metaphysics' and 'The Scientific Revolution 1500-1800'
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2 ideas
10. Modality / B. Possibility / 1. Possibility
4195
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It is impossible to reach a valid false conclusion from true premises, so reason itself depends on possibility [Lowe]
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10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds
4207
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We might eliminate 'possible' and 'necessary' in favour of quantification over possible worlds [Lowe]
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