Ideas from 'Absolute Necessities' by Bob Hale [1996], by Theme Structure
[found in 'Philosophical Perspectives' (ed/tr -) [- ,]].
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10. Modality / A. Necessity / 2. Nature of Necessity
15086
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Absolute necessity might be achievable either logically or metaphysically
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10. Modality / A. Necessity / 3. Types of Necessity
8261
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Maybe not-p is logically possible, but p is metaphysically necessary, so the latter is not absolute
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15080
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'Relative' necessity is just a logical consequence of some statements ('strong' if they are all true)
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15081
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A strong necessity entails a weaker one, but not conversely; possibilities go the other way
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10. Modality / A. Necessity / 5. Metaphysical Necessity
15082
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Metaphysical necessity says there is no possibility of falsehood
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10. Modality / A. Necessity / 6. Logical Necessity
15088
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Logical necessities are true in virtue of the nature of all logical concepts
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15085
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'Broadly' logical necessities are derived (in a structure) entirely from the concepts
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10. Modality / C. Sources of Modality / 4. Necessity from Concepts
15087
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Conceptual necessities are made true by all concepts
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