Combining Texts

All the ideas for 'Letter Seven', 'Introduction - Ontology' and 'The Barcan Formula and Metaphysics'

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10 ideas

4. Formal Logic / D. Modal Logic ML / 7. Barcan Formula

16186

The Barcan Formulas express how to combine modal operators with classical quantifiers [Simchen]

16187

The Barcan Formulas are orthodox, but clash with the attractive Actualist view [Simchen]

16190

BF implies that if W possibly had a child, then something is possibly W's child [Simchen]

7. Existence / C. Structure of Existence / 3. Levels of Reality

5500	Biologists see many organic levels, 'abstract' if seen from below, 'structural' if seen from above [Lycan]

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

5494	'Lightning is electric discharge' and 'Phosphorus is Venus' are synthetic a posteriori identities [Lycan]

10. Modality / E. Possible worlds / 1. Possible Worlds / d. Possible worlds actualism

16188

Serious Actualism says there are no facts at all about something which doesn't exist [Simchen]

17. Mind and Body / C. Functionalism / 2. Machine Functionalism

5496	Functionalism has three linked levels: physical, functional, and mental [Lycan]

17. Mind and Body / C. Functionalism / 5. Teleological Functionalism

5499	A mental state is a functional realisation of a brain state when it serves the purpose of the organism [Lycan]

22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / a. Preconditions for ethics

168	To understand morality requires a soul [Plato]

26. Natural Theory / A. Speculations on Nature / 2. Natural Purpose / c. Purpose denied

5501	People are trying to explain biological teleology in naturalistic causal terms [Lycan]