Combining Texts

All the ideas for 'Deflationary Metaontology of Thomasson', 'A Plea for Substitutional Quantification' and 'Could There Be Unicorns?'

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14 ideas

4. Formal Logic / D. Modal Logic ML / 1. Modal Logic

16951

It was realised that possible worlds covered all modal logics, if they had a structure [Dummett]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / a. Systems of modal logic

16953

Relative possibility one way may be impossible coming back, so it isn't symmetrical [Dummett]

16952

If something is only possible relative to another possibility, the possibility relation is not transitive [Dummett]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / d. System T

16960

If possibilitiy is relative, that might make accessibility non-transitive, and T the correct system [Dummett]

4. Formal Logic / D. Modal Logic ML / 3. Modal Logic Systems / g. System S4

16958

In S4 the actual world has a special place [Dummett]

4. Formal Logic / D. Modal Logic ML / 4. Alethic Modal Logic

9470	Modal logic is not an extensional language [Parsons,C]

5. Theory of Logic / G. Quantification / 4. Substitutional Quantification

9469	Substitutional existential quantifier may explain the existence of linguistic entities [Parsons,C]

9468	On the substitutional interpretation, '(∃x) Fx' is true iff a closed term 't' makes Ft true [Parsons,C]

9. Objects / A. Existence of Objects / 5. Individuation / e. Individuation by kind

14082

No sortal could ever exactly pin down which set of particles count as this 'cup' [Schaffer,J]

9. Objects / F. Identity among Objects / 6. Identity between Objects

14081

Identities can be true despite indeterminate reference, if true under all interpretations [Schaffer,J]

10. Modality / E. Possible worlds / 1. Possible Worlds / a. Possible worlds

16957

Possible worlds aren't how the world might be, but how a world might be, given some possibility [Dummett]

10. Modality / E. Possible worlds / 1. Possible Worlds / c. Possible worlds realism

16959

If possible worlds have no structure (S5) they are equal, and it is hard to deny them reality [Dummett]

23. Ethics / C. Virtue Theory / 1. Virtue Theory / d. Virtue theory critique

16956

To explain generosity in a person, you must understand a generous action [Dummett]

26. Natural Theory / B. Natural Kinds / 7. Critique of Kinds

16954

Generalised talk of 'natural kinds' is unfortunate, as they vary too much [Dummett]