Combining Texts

All the ideas for 'Ethics: Inventing Right and Wrong', 'Wittgenstein's 'Philosophical Investigations'' and 'Completeness of Axioms of Logic'

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3 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]

15. Nature of Minds / A. Nature of Mind / 4. Other Minds / d. Other minds by analogy

14644

If my conception of pain derives from me, it is a contradiction to speak of another's pain [Malcolm]

22. Metaethics / A. Ethics Foundations / 1. Nature of Ethics / f. Ethical non-cognitivism

4761	The 'error theory' of morals says there is no moral knowledge, because there are no moral facts [Mackie, by Engel]