15 ideas
| 18901 | Truthmakers are facts 'of' a domain, not something 'in' the domain [Sommers] |
| 18904 | 'Predicable' terms come in charged pairs, with one the negation of the other [Sommers, by Engelbretsen] |
| 18895 | Logic which maps ordinary reasoning must be transparent, and free of variables [Sommers] |
| 18897 | Predicate logic has to spell out that its identity relation '=' is an equivalent relation [Sommers] |
| 18893 | Translating into quantificational idiom offers no clues as to how ordinary thinkers reason [Sommers] |
| 18903 | Sommers promotes the old idea that negation basically refers to terms [Sommers, by Engelbretsen] |
| 18894 | Predicates form a hierarchy, from the most general, down to names at the bottom [Sommers] |
| 18900 | Unfortunately for realists, modern logic cannot say that some fact exists [Sommers] |
| 13127 | Categories can't overlap; they are either disjoint, or inclusive [Sommers, by Westerhoff] |
| 16659 | Relations do not add anything to reality, though they are real aspects of the world [Olivi] |
| 16672 | Quantity is the quantified parts of a thing, plus location and coordination [Olivi] |
| 16673 | Quantity just adds union and location to the extension of parts [Olivi] |
| 20653 | Six reduction levels: groups, lives, cells, molecules, atoms, particles [Putnam/Oppenheim, by Watson] |
| 18898 | In standard logic, names are the only way to refer [Sommers] |
| 16663 | Things are limited by the species to certain modes of being [Olivi] |