6 ideas
| 20440 | Art is a referential activity, hence indefinable, but it has a set of symptoms [Goodman] |
| 20439 | Artistic symbols are judged by the fruitfulness of their classifications [Goodman, by Giovannelli] |
| 20438 | A performance is only an instance of a work if there is not a single error [Goodman] |
| 20444 | If paintings could be perfectly duplicated, it would be a multiple art form [Currie, by Bacharach] |
| 20437 | A copy only becomes an 'instance' of an artwork if there is a system of notation [Goodman] |
| 9425 | Lewis later proposed the axioms at the intersection of the best theories (which may be few) [Mumford on Lewis] |