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Ideas for
'Lectures 1930-32 (student notes)', 'fragments/reports' and 'Logical Necessity: Some Issues'
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13 ideas
10. Modality / A. Necessity / 5. Metaphysical Necessity
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444
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The first way of enquiry involves necessary existence [Parmenides]
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10. Modality / A. Necessity / 6. Logical Necessity
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12184
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Logical necessity overrules all other necessities [McFetridge]
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15083
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The fundamental case of logical necessity is the valid conclusion of an inference [McFetridge, by Hale]
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15084
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In the McFetridge view, logical necessity means a consequent must be true if the antecedent is [McFetridge, by Hale]
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12180
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Logical necessity requires that a valid argument be necessary [McFetridge]
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12181
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Traditionally, logical necessity is the strongest, and entails any other necessities [McFetridge]
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12183
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It is only logical necessity if there is absolutely no sense in which it could be false [McFetridge]
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12192
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The mark of logical necessity is deduction from any suppositions whatever [McFetridge]
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10. Modality / A. Necessity / 8. Transcendental Necessity
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450
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Necessity sets limits on being, in order to give it identity [Parmenides]
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10. Modality / B. Possibility / 2. Epistemic possibility
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12182
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We assert epistemic possibility without commitment to logical possibility [McFetridge]
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10. Modality / C. Sources of Modality / 1. Sources of Necessity
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12187
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Objectual modal realists believe in possible worlds; non-objectual ones rest it on the actual world [McFetridge]
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10. Modality / C. Sources of Modality / 3. Necessity by Convention
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18726
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For each necessity in the world there is an arbitrary rule of language [Wittgenstein]
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10. Modality / C. Sources of Modality / 5. Modality from Actuality
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12186
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Modal realists hold that necessities and possibilities are part of the totality of facts [McFetridge]
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