Combining Philosophers

Ideas for Pyrrho, Michael Walzer and Bob Hale

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7 ideas

5. Theory of Logic / A. Overview of Logic / 7. Second-Order Logic

19296

If second-order variables range over sets, those are just objects; properties and relations aren't sets [Hale]

5. Theory of Logic / C. Ontology of Logic / 4. Logic by Convention

19289

Maybe conventionalism applies to meaning, but not to the truth of propositions expressed [Hale]

5. Theory of Logic / F. Referring in Logic / 1. Naming / d. Singular terms

10316

We should decide whether singular terms are genuine by their usage [Hale]

10312

Often the same singular term does not ensure reliable inference [Hale]

10313

Plenty of clear examples have singular terms with no ontological commitment [Hale]

10322

If singular terms can't be language-neutral, then we face a relativity about their objects [Hale]

5. Theory of Logic / H. Proof Systems / 4. Natural Deduction

19298

Unlike axiom proofs, natural deduction proofs needn't focus on logical truths and theorems [Hale]