Combining Texts

All the ideas for 'The Varieties of Necessity', 'Conditionals' and 'The Development of Logic'

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

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5 ideas

4. Formal Logic / F. Set Theory ST / 4. Axioms for Sets / f. Axiom of Infinity V

10051

The axiom of infinity is not a truth of logic, and its adoption is an abandonment of logicism [Kneale,W and M]

10. Modality / B. Possibility / 8. Conditionals / c. Truth-function conditionals

14289

There are some assertable conditionals one would reject if one learned the antecedent [Jackson, by Edgington]

10. Modality / C. Sources of Modality / 1. Sources of Necessity

9216	Each area of enquiry, and its source, has its own distinctive type of necessity [Fine,K]

13. Knowledge Criteria / C. External Justification / 7. Testimony

9214	Unsupported testimony may still be believable [Fine,K]

26. Natural Theory / D. Laws of Nature / 8. Scientific Essentialism / a. Scientific essentialism

9215	Causation is easier to disrupt than logic, so metaphysics is part of nature, not vice versa [Fine,K]