Combining Texts

All the ideas for 'Natural Kinds and Biological Realism', 'Rechnungsmethoden (dissertation)' and 'On the Algebra of Logic'

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6 ideas

6. Mathematics / A. Nature of Mathematics / 3. Nature of Numbers / c. Priority of numbers

18256

Quantity is inconceivable without the idea of addition [Frege]

6. Mathematics / C. Sources of Mathematics / 2. Intuition of Mathematics

9831	Geometry appeals to intuition as the source of its axioms [Frege]

10. Modality / B. Possibility / 8. Conditionals / d. Non-truthfunction conditionals

14303

Truth-functional conditionals have a simple falsification, when A is true and B is false [Peirce]

26. Natural Theory / B. Natural Kinds / 1. Natural Kinds

17371

Some kinds are very explanatory, but others less so, and some not at all [Devitt]

27. Natural Reality / G. Biology / 5. Species

17372

The higher categories are not natural kinds, so the Linnaean hierarchy should be given up [Devitt]

17373

Species pluralism says there are several good accounts of what a species is [Devitt]