Combining Texts

All the ideas for 'The Courtier and the Heretic', 'Frege' and 'Fact, Fiction and Forecast (4th ed)'

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7 ideas

4. Formal Logic / B. Propositional Logic PL / 1. Propositional Logic

7726	Aristotelian logic dealt with inferences about concepts, and there were also proposition inferences [Weiner]
	Full Idea: Till the nineteenth century, it was a common view that Aristotelian logic could evaluate inferences whose validity was based on relations between concepts, while propositional logic could evaluate inferences based on relations between propositions.
	From: Joan Weiner (Frege [1999], Ch.3)
	A reaction: Venn diagrams relate closely to Aristotelian syllogisms, as each concept is represented by a circle, and shows relations between sets. Arrows seem needed to represent how to go from one proposition to another. Is one static, the other dynamic?

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

12394	If the result is bad, we change the rule; if we like the rule, we reject the result [Goodman]
	Full Idea: A rule is amended if it yields an inference we are unwilling to accept; an inference is rejected if it violates a rule we are unwilling to amend.
	From: Nelson Goodman (Fact, Fiction and Forecast (4th ed) [1954], p.64)
	A reaction: This is clearly in tune with Quine's assertion that logic is potentially revisable, and the idea is pragmatist in spirit. It is hard to deny that intuitions about what makes a good argument control our logic. I say the world controls our intuitions.

8. Modes of Existence / C. Powers and Dispositions / 6. Dispositions / a. Dispositions

14292	Dispositions seem more ethereal than behaviour; a non-occult account of them would be nice [Goodman]
	Full Idea: Dispositions of a thing are as important to us as overt behaviour, but they strike us by comparison as rather ethereal. So we are moved to enquire whether we can bring them down to earth, and explain disposition terms without reference to occult powers.
	From: Nelson Goodman (Fact, Fiction and Forecast (4th ed) [1954], II.3)
	A reaction: Mumford quotes this at the start of his book on dispositions, as his agenda. I suspect that the 'occult' aspect crept in because dispositions were based on powers, and the dominant view was that these were the immediate work of God.

14. Science / C. Induction / 5. Paradoxes of Induction / a. Grue problem

18749	Goodman argued that the confirmation relation can never be formalised [Goodman, by Horsten/Pettigrew]
	Full Idea: Goodman constructed arguments that purported to show that a satisfactory syntactic analysis of the confirmation relation can never be found. In response, philosophers of science tried to model it in probabilistic terms.
	From: report of Nelson Goodman (Fact, Fiction and Forecast (4th ed) [1954]) by Horsten,L/Pettigrew,R - Mathematical Methods in Philosophy 4
	A reaction: I take this idea to say that Bayesianism was developed in response to the grue problem. This is an interesting light on 'grue', which never bothered me much. The point is it scuppered formal attempts to model induction.

17646	Goodman showed that every sound inductive argument has an unsound one of the same form [Goodman, by Putnam]
	Full Idea: Goodman has shown that no purely formal criterion can distinguish arguments that are intuitively sound inductive arguments for unsound ones: for every sound one there is an unsound one of the same form. The predicates in the argument make the difference.
	From: report of Nelson Goodman (Fact, Fiction and Forecast (4th ed) [1954]) by Hilary Putnam - Why there isn't a ready-made world 'Causation'
	A reaction: This is to swallow grue whole. I think a bit more chewing is called for. By this date Putnam strikes me as a crazy relativist who has lost his grip on the world. Note the word 'formal' - but Putnam seems to think the argument is important.

24. Political Theory / D. Ideologies / 10. Theocracy

7825	The politics of Leibniz was the reunification of Christianity [Stewart,M]
	Full Idea: The politics of Leibniz may be summed up in one word: theocracy. The specific agenda motivating much of his work was to reunite the Protestant and Catholic churches
	From: Matthew Stewart (The Courtier and the Heretic [2007], Ch. 5)
	A reaction: This would be a typical project for a rationalist philosopher, who thinks that good reasoning will gradually converge on the one truth.

26. Natural Theory / D. Laws of Nature / 3. Laws and Generalities

4794	We don't use laws to make predictions, we call things laws if we make predictions with them [Goodman]
	Full Idea: Rather than a sentence being used for prediction because it is a law, it is called a law because it is used for prediction.
	From: Nelson Goodman (Fact, Fiction and Forecast (4th ed) [1954], p.21), quoted by Stathis Psillos - Causation and Explanation §5.4
	A reaction: This smacks of dodgy pragmatism, and sounds deeply wrong. The perception of a law has to be prior to making the prediction. Why do we make the prediction, if we haven't spotted a law. Goodman is mesmerised by language instead of reality.