Combining Texts

All the ideas for 'Logical Necessity: Some Issues', 'Letters to a Young Clergyman' and 'Universals and Particulars'

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12 ideas

2. Reason / A. Nature of Reason / 9. Limits of Reason

22520

You can't reason someone out of an irrational opinion [Swift]

8. Modes of Existence / D. Universals / 6. Platonic Forms / c. Self-predication

4442	Most thinkers now reject self-predication (whiteness is NOT white) so there is no Third Man problem [Armstrong]

10. Modality / A. Necessity / 6. Logical Necessity

12184

Logical necessity overrules all other necessities [McFetridge]

15083

The fundamental case of logical necessity is the valid conclusion of an inference [McFetridge, by Hale]

15084

In the McFetridge view, logical necessity means a consequent must be true if the antecedent is [McFetridge, by Hale]

12180

Logical necessity requires that a valid argument be necessary [McFetridge]

12181

Traditionally, logical necessity is the strongest, and entails any other necessities [McFetridge]

12183

It is only logical necessity if there is absolutely no sense in which it could be false [McFetridge]

12192

The mark of logical necessity is deduction from any suppositions whatever [McFetridge]

10. Modality / B. Possibility / 2. Epistemic possibility

12182

We assert epistemic possibility without commitment to logical possibility [McFetridge]

10. Modality / C. Sources of Modality / 1. Sources of Necessity

12187

Objectual modal realists believe in possible worlds; non-objectual ones rest it on the actual world [McFetridge]

10. Modality / C. Sources of Modality / 5. Modality from Actuality

12186

Modal realists hold that necessities and possibilities are part of the totality of facts [McFetridge]