Combining Texts

All the ideas for 'Locke on Essences and Kinds', 'Completeness of Axioms of Logic' and 'Consilience'

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6 ideas

4. Formal Logic / C. Predicate Calculus PC / 3. Completeness of PC

17751

Gödel proved the completeness of first order predicate logic in 1930 [Gödel, by Walicki]

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]

15643

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

15645

Nominal essence are the observable properties of things [Eagle]

24. Political Theory / A. Basis of a State / 1. A People / c. A unified people

20662

The biology of societies: kin selection, parenting, mating; status, territory, contracts [Wilson,EO]

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]