Combining Texts

All the ideas for 'fragments/reports', 'A Theory of 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 / a. Conditionals

14286

In nearby worlds where A is true, 'if A,B' is true or false if B is true or false [Stalnaker]

10. Modality / E. Possible worlds / 2. Nature of Possible Worlds / a. Nature of possible worlds

14285

A possible world is the ontological analogue of hypothetical beliefs [Stalnaker]

26. Natural Theory / A. Speculations on Nature / 5. Infinite in Nature

1748	Archelaus was the first person to say that the universe is boundless [Archelaus, by Diog. Laertius]

27. Natural Reality / G. Biology / 3. Evolution

5989	Archelaus said life began in a primeval slime [Archelaus, by Schofield]