46 ideas
7973 | There is no longer anything on which there is nothing to say [Baudrillard] |
7975 | The task of philosophy is to unmask the illusion of objective reality [Baudrillard] |
7986 | Drunken boat pilots are less likely to collide than clearly focused ones [Baudrillard] |
7982 | Instead of thesis and antithesis leading to synthesis, they now cancel out, and the conflict is levelled [Baudrillard] |
15413 | With four tense operators, all complex tenses reduce to fourteen basic cases [Burgess] |
15415 | The temporal Barcan formulas fix what exists, which seems absurd [Burgess] |
15430 | Is classical logic a part of intuitionist logic, or vice versa? [Burgess] |
15431 | It is still unsettled whether standard intuitionist logic is complete [Burgess] |
15429 | Relevance logic's → is perhaps expressible by 'if A, then B, for that reason' [Burgess] |
15404 | Technical people see logic as any formal system that can be studied, not a study of argument validity [Burgess] |
15405 | Classical logic neglects the non-mathematical, such as temporality or modality [Burgess] |
15427 | The Cut Rule expresses the classical idea that entailment is transitive [Burgess] |
15421 | Classical logic neglects counterfactuals, temporality and modality, because maths doesn't use them [Burgess] |
15403 | Philosophical logic is a branch of logic, and is now centred in computer science [Burgess] |
15407 | Formalising arguments favours lots of connectives; proving things favours having very few [Burgess] |
15424 | Asserting a disjunction from one disjunct seems odd, but can be sensible, and needed in maths [Burgess] |
15409 | All occurrences of variables in atomic formulas are free [Burgess] |
15414 | The denotation of a definite description is flexible, rather than rigid [Burgess] |
15406 | 'Induction' and 'recursion' on complexity prove by connecting a formula to its atomic components [Burgess] |
15425 | The sequent calculus makes it possible to have proof without transitivity of entailment [Burgess] |
15426 | We can build one expanding sequence, instead of a chain of deductions [Burgess] |
15408 | 'Tautologies' are valid formulas of classical sentential logic - or substitution instances in other logics [Burgess] |
15418 | Validity (for truth) and demonstrability (for proof) have correlates in satisfiability and consistency [Burgess] |
15412 | Models leave out meaning, and just focus on truth values [Burgess] |
15411 | We only need to study mathematical models, since all other models are isomorphic to these [Burgess] |
15416 | We aim to get the technical notion of truth in all models matching intuitive truth in all instances [Burgess] |
15428 | The Liar seems like a truth-value 'gap', but dialethists see it as a 'glut' [Burgess] |
19400 | Possibles demand existence, so as many of them as possible must actually exist [Leibniz] |
19401 | God's sufficient reason for choosing reality is in the fitness or perfection of possibilities [Leibniz] |
7974 | Without God we faced reality: what do we face without reality? [Baudrillard] |
7987 | Nothing is true, but everything is exact [Baudrillard] |
15420 | De re modality seems to apply to objects a concept intended for sentences [Burgess] |
15419 | General consensus is S5 for logical modality of validity, and S4 for proof [Burgess] |
15417 | Logical necessity has two sides - validity and demonstrability - which coincide in classical logic [Burgess] |
15422 | Three conditionals theories: Materialism (material conditional), Idealism (true=assertable), Nihilism (no truth) [Burgess] |
15423 | It is doubtful whether the negation of a conditional has any clear meaning [Burgess] |
19402 | The actual universe is the richest composite of what is possible [Leibniz] |
7978 | There is no need to involve the idea of free will to make choices about one's life [Baudrillard] |
7980 | In modern times, being useless is the essential aesthetic ingredient for an object [Baudrillard] |
7983 | Good versus evil has been banefully reduced to happiness versus misfortune [Baudrillard] |
7981 | Whole populations are terrorist threats to authorities, who unite against them [Baudrillard] |
7976 | People like democracy because it means they can avoid power [Baudrillard] |
7977 | Only in the last 200 years have people demanded the democratic privilege of being individuals [Baudrillard] |
7979 | The arrival of the news media brought history to an end [Baudrillard] |
7984 | Suicide is ascribed to depression, with the originality of the act of will ignored [Baudrillard] |
7985 | Pascal says secular life is acceptable, but more fun with the hypothesis of God [Baudrillard] |