36 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] |
| 3750 | "It is true that x" means no more than x [Ramsey] |
| 17749 | Post proved the consistency of propositional logic in 1921 [Walicki] |
| 17765 | Propositional language can only relate statements as the same or as different [Walicki] |
| 17764 | Boolean connectives are interpreted as functions on the set {1,0} [Walicki] |
| 17752 | The empty set is useful for defining sets by properties, when the members are not yet known [Walicki] |
| 17753 | The empty set avoids having to take special precautions in case members vanish [Walicki] |
| 17759 | Ordinals play the central role in set theory, providing the model of well-ordering [Walicki] |
| 17741 | To determine the patterns in logic, one must identify its 'building blocks' [Walicki] |
| 17747 | A 'model' of a theory specifies interpreting a language in a domain to make all theorems true [Walicki] |
| 17748 | The L-S Theorem says no theory (even of reals) says more than a natural number theory [Walicki] |
| 17761 | A compact axiomatisation makes it possible to understand a field as a whole [Walicki] |
| 17763 | Axiomatic systems are purely syntactic, and do not presuppose any interpretation [Walicki] |
| 17758 | Ordinals are transitive sets of transitive sets; or transitive sets totally ordered by inclusion [Walicki] |
| 17755 | Ordinals are the empty set, union with the singleton, and any arbitrary union of ordinals [Walicki] |
| 17756 | The union of finite ordinals is the first 'limit ordinal'; 2ω is the second... [Walicki] |
| 17760 | Two infinite ordinals can represent a single infinite cardinal [Walicki] |
| 17757 | Members of ordinals are ordinals, and also subsets of ordinals [Walicki] |
| 17762 | In non-Euclidean geometry, all Euclidean theorems are valid that avoid the fifth postulate [Walicki] |
| 17754 | Inductive proof depends on the choice of the ordering [Walicki] |
| 7974 | Without God we faced reality: what do we face without reality? [Baudrillard] |
| 7987 | Nothing is true, but everything is exact [Baudrillard] |
| 17742 | Scotus based modality on semantic consistency, instead of on what the future could allow [Walicki] |
| 7978 | There is no need to involve the idea of free will to make choices about one's life [Baudrillard] |
| 18818 | Sentence meaning is given by the actions to which it would lead [Ramsey] |
| 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] |