Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'Ontology and the Vicious Circle Principle' and 'Ways Worlds Could Be'

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

---

6 ideas

4. Formal Logic / F. Set Theory ST / 8. Critique of Set Theory

18151

Could we replace sets by the open sentences that define them? [Chihara, by Bostock]

9. Objects / D. Essence of Objects / 13. Nominal Essence

15642

If kinds depend only on what can be observed, many underlying essences might produce the same kind [Eagle]

15645

Nominal essence are the observable properties of things [Eagle]

15643

Nominal essence mistakenly gives equal weight to all underlying properties that produce appearances [Eagle]

10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds

15432

Structural universals might serve as possible worlds [Forrest, by Lewis]

26. Natural Theory / B. Natural Kinds / 4. Source of Kinds

15641

Kinds are fixed by the essential properties of things - the properties that make it that kind of thing [Eagle]