8 ideas
| 21852 | Nomads are the basis of history, and yet almost unknowable [Deleuze] |
| Full Idea: There is no history from the viewpoint of nomads, although everything passes through them, to the point that they are like the noumena or the unknowable of history. | |
| From: Gilles Deleuze (Many Politics [1977], p.107) | |
| A reaction: Nomads have the same place in society that indeterminate 'stuff' has in an object-orientated metaphysics. Deleuze seems to be romanticising nomads the way the late Victorians romanticised gypsies. |
| 10196 | The Axiom of Choice needs a criterion of choice [Black] |
| Full Idea: Some mathematicians seem to think that talk of an Axiom of Choice allows them to choose a single member of a collection when there is no criterion of choice. | |
| From: Max Black (The Identity of Indiscernibles [1952], p.68) |
| 13007 | Archimedes defined a straight line as the shortest distance between two points [Archimedes, by Leibniz] |
| Full Idea: Archimedes gave a sort of definition of 'straight line' when he said it is the shortest line between two points. | |
| From: report of Archimedes (fragments/reports [c.240 BCE]) by Gottfried Leibniz - New Essays on Human Understanding 4.13 | |
| A reaction: Commentators observe that this reduces the purity of the original Euclidean axioms, because it involves distance and measurement, which are absent from the purest geometry. |
| 10194 | Two things can only be distinguished by a distinct property or a distinct relation [Black] |
| Full Idea: The only way we can discover that two things exist is by finding out that one has a quality not possessed by the other, or else that one has a relational characteristic that the other hasn't. | |
| From: Max Black (The Identity of Indiscernibles [1952], p.67) | |
| A reaction: At least this doesn't conflate relations with properties. Note that this idea is clearly epistemological, and in no way rules out the separateness of two objects which none of us can ever discern. Maybe the Earth has two Suns, which imperceptibly swap. |
| 10193 | The 'property' of self-identity is uselessly tautological [Black] |
| Full Idea: Saying that 'a has the property of being identical with a' is a roundabout way of saying nothing - a useless tautology - and means not more than 'a is a' | |
| From: Max Black (The Identity of Indiscernibles [1952], p.66) | |
| A reaction: This matter resembles the problem of the number zero, and the empty set, which seem to be crucial entities for logicians, but of no interest to a common sense view of the world. So much the worse for logic, I am inclined to say. |
| 10195 | If the universe just held two indiscernibles spheres, that refutes the Identity of Indiscernibles [Black] |
| Full Idea: Isn't it logically possible that the universe should have contained nothing but two exactly similar spheres? ...So two things would have all their properties in common, and this would refute the Principle of the Identity of Indiscernibles. | |
| From: Max Black (The Identity of Indiscernibles [1952], p.67) | |
| A reaction: [Black is the originator of this famous example] It also appears to be naturally possible. An observer at an instant of viewing will discern a relational difference relative to themselves. Most people take Black's objection to be decisive. |
| 21853 | We are currently extending capitalism to the whole of society [Deleuze] |
| Full Idea: What characterises our situation is ….the extension of capitalism to the whole social body. | |
| From: Gilles Deleuze (Many Politics [1977], p.110) | |
| A reaction: This is driven by the naïve people who think all problems can be solved by market forces, and that to everything that goes bankrupt we should just say 'good riddance'. |
| 21851 | The State requires self-preservation, but the war-machine desires destruction [Deleuze] |
| Full Idea: There will always be a tension between the State apparatus with its requirement for self-preservation, and the war-machine in its undertaking to destroy the State, to destroy the subjects of the State, and even to destroy itself. | |
| From: Gilles Deleuze (Many Politics [1977], p.106) | |
| A reaction: This seems to fit WWI quite well, but the desire of the war-machine to destroy the State which pays for it sounds unlikely. Nevertheless war is appalling for the state, but it is the whole point of the war-machine, which gets restless. |