Combining Texts

All the ideas for 'The Nature of Things', 'Conditionals' and 'On the Pragmatics of Communications'

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11 ideas

4. Formal Logic / F. Set Theory ST / 7. Natural Sets

9406	A class is natural when everybody can spot further members of it [Quinton]

7. Existence / E. Categories / 5. Category Anti-Realism

15730

Extreme nominalists say all classification is arbitrary convention [Quinton]

8. Modes of Existence / B. Properties / 5. Natural Properties

15728

The naturalness of a class depends as much on the observers as on the objects [Quinton]

9407	Properties imply natural classes which can be picked out by everybody [Quinton]

8. Modes of Existence / D. Universals / 4. Uninstantiated Universals

15729

Uninstantiated properties must be defined using the instantiated ones [Quinton]

9. Objects / A. Existence of Objects / 5. Individuation / b. Individuation by properties

8520	An individual is a union of a group of qualities and a position [Quinton, by Campbell,K]

10. Modality / B. Possibility / 8. Conditionals / a. Conditionals

13768

Validity can preserve certainty in mathematics, but conditionals about contingents are another matter [Edgington]

10. Modality / B. Possibility / 8. Conditionals / b. Types of conditional

13770

There are many different conditional mental states, and different conditional speech acts [Edgington]

10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals

13764

Are conditionals truth-functional - do the truth values of A and B determine the truth value of 'If A, B'? [Edgington]

13765

'If A,B' must entail ¬(A & ¬B); otherwise we could have A true, B false, and If A,B true, invalidating modus ponens [Edgington]

19. Language / A. Nature of Meaning / 6. Meaning as Use

15666

To understand language is to know how to use it to reach shared understandings [Habermas]