Combining Texts

All the ideas for 'Classical Cosmology (frags)', 'Two Chief World Systems' and 'Commentary on 'Posterior Analytics'

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5 ideas

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

9073	Abstraction from an ambiguous concept like 'mole' will define them as the same [Barnes,J]
	Full Idea: The procedure of abstraction will not allow us to distinguish the ambiguity between 'mole' as an animal and as an artefact. The stages of abstraction will only end up with 'physical object', and this will then count as the definition.
	From: Jonathan Barnes (Commentary on 'Posterior Analytics [1993], n to 97b7)
	A reaction: This is a problem if you adhere to a rather precise account of the steps of abstraction, with every stage explicit (and probably expressed in terms of sets), but I suspect that the real tangle of semi-conscious abstraction avoids this problem.

9074	Abstraction cannot produce the concept of a 'game', as there is no one common feature [Barnes,J]
	Full Idea: Abstractions cannot account for those general terms whose instances do not have any set of features in common. The word 'game' is not ambiguous, but not all games have one thing in common; they are united by looser 'family resemblance'.
	From: Jonathan Barnes (Commentary on 'Posterior Analytics [1993], n to 97b7)
	A reaction: (This point comes from Wittgenstein, Idea 4141) English-speakers can't agree on borderline cases (avoiding cracks in pavements). Life is just a game. The objection would be refuted by discussion of higher-level abstractions to make connections.

9072	Defining concepts by abstractions will collect together far too many attributes from entities [Barnes,J]
	Full Idea: If we create abstractions by collection of attributes common to groups of entities, we will collect far too many attributes, and wrongly put them into the definition (such as 'having hairless palms' when identifying 'men').
	From: Jonathan Barnes (Commentary on 'Posterior Analytics [1993], n to 97b7)
	A reaction: [compressed] Defining 'man' is a hugely complex business (see Idea 1763!), unlike defining 'hair' or 'red'. Some attributes will strike perceivers immediately, but absence of an attribute is not actually 'perceived' at all.

27. Natural Reality / A. Classical Physics / 1. Mechanics / b. Laws of motion

19673	Galileo mathematised movement, and revealed its invariable component - acceleration [Galileo, by Meillassoux]
	Full Idea: Galileo conceives of movement in mathematical terms. ...In doing so, he uncovered, beyond the variations of position and speed, the mathematical invariant of movement - that is to say, acceleration.
	From: report of Galileo Galilei (Two Chief World Systems [1632]) by Quentin Meillassoux - After Finitude; the necessity of contingency 5
	A reaction: That is a very nice advert for the mathematical physics which replaced the Aristotelian substantial forms. ...And yet, is acceleration some deep fact about nature, or a concept which is only needed if you insist on being mathematical?

27. Natural Reality / E. Cosmology / 1. Cosmology

5994	Is the cosmos open or closed, mechanical or teleological, alive or inanimate, and created or eternal? [Robinson,TM, by PG]
	Full Idea: The four major disputes in classical cosmology were whether the cosmos is 'open' or 'closed', whether it is explained mechanistically or teleologically, whether it is alive or mere matter, and whether or not it has a beginning.
	From: report of T.M. Robinson (Classical Cosmology (frags) [1997]) by PG - Db (ideas)
	A reaction: A nice summary. The standard modern view is closed, mechanistic, inanimate and non-eternal. But philosophers can ask deeper questions than physicists, and I say we are entitled to speculate when the evidence runs out.