Combining Texts

All the ideas for 'fragments/reports', 'The Logical Syntax of Language' and 'Abstraction Reconsidered'

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9 ideas

5. Theory of Logic / B. Logical Consequence / 1. Logical Consequence

13342

Carnap defined consequence by contradiction, but this is unintuitive and changes with substitution [Tarski on Carnap]

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

13251

Each person is free to build their own logic, just by specifying a syntax [Carnap]

6. Mathematics / C. Sources of Mathematics / 4. Mathematical Empiricism / c. Against mathematical empiricism

10735

Abstraction from objects won't reveal an operation's being performed 'so many times' [Geach]

15. Nature of Minds / C. Capacities of Minds / 5. Generalisation by mind

10732

If concepts are just recognitional, then general judgements would be impossible [Geach]

18. Thought / D. Concepts / 3. Ontology of Concepts / b. Concepts as abilities

10731

For abstractionists, concepts are capacities to recognise recurrent features of the world [Geach]

18. Thought / E. Abstraction / 8. Abstractionism Critique

10733

The abstractionist cannot explain 'some' and 'not' [Geach]

10734

Only a judgement can distinguish 'striking' from 'being struck' [Geach]

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]