Combining Texts

All the ideas for 'The Problem of Counterfactual Conditionals', 'A Note on the entscheidungsproblem' and 'Letters to Jacques Lenfant'

expand these ideas     |    start again     |     specify just one area for these texts

---

3 ideas

5. Theory of Logic / K. Features of Logics / 7. Decidability

18758

Validity is provable, but invalidity isn't, because the model is infinite [Church, by McGee]

8. Modes of Existence / C. Powers and Dispositions / 2. Powers as Basic

12723

The most primitive thing in substances is force, which leads to their actions and dispositions [Leibniz]

10. Modality / B. Possibility / 9. Counterfactuals

12191

Counterfactuals are true if logical or natural laws imply the consequence [Goodman, by McFetridge]