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3 ideas
13980 | If you like judgments and reject propositions, what are the relata of incoherence in a judgment? [Ryle] |
Full Idea: Those who find 'judgments' everywhere and propositions nowhere find that some judgments cohere whereas others are incoherent. What is the status of the terms between which these relations hold? | |
From: Gilbert Ryle (Are there propositions? [1930], IV) | |
A reaction: Ryle is playing devil's advocate, but this strikes me as a nice point. I presume Russell after 1906 is the sort of thinker he has in mind. |
9789 | You can't abstract natural properties to make Forms - objects and attributes are defined together [Aristotle] |
Full Idea: Those who say there are Forms abstract natural properties, even though they are less separable than mathematical properties. This is clear if you try to define both the objects themselves and their attributes. | |
From: Aristotle (Physics [c.337 BCE], 193b36) | |
A reaction: (Compare Idea 9788) This is Frege's black and white cats, where you cannot abstract the black without thinking of the cat, but Aristotle thinks mathematical abstraction is more feasible. |
9788 | Mathematicians study what is conceptually separable, and doesn't lead to error [Aristotle] |
Full Idea: Mathematicians abstract properties which are conceptually separable from the world of change. It makes no difference if you treat them as separate, in the sense that it does not result in error. | |
From: Aristotle (Physics [c.337 BCE], 193b33) | |
A reaction: This strikes me as a crucial point to make against Frege (if Aristotle is right). Frege hates abstractionism precisely because it is psychological, and hence admits subjective error, instead of objective truth. Does 'pure' abstraction avoid error? |