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Ideas for 'What is Logic?st1=Ian Hacking', 'Introduction to 'Modality'' and 'Analyzing Modality'

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2 ideas

10. Modality / A. Necessity / 1. Types of Modality

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Maybe modal thought is unavoidable, as a priori recognition of necessary truth-preservation in reasoning [Hale/Hoffmann,A]

10. Modality / A. Necessity / 11. Denial of Necessity

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De re necessity is just de dicto necessity about object-essences [Jubien]