7 ideas
| 19053 | Logic would be more natural if negation only referred to predicates [Dummett] |
| Full Idea: A better proposal for a formal logic closer to natural language would be one that had a negation-operator only for (simple) predicates. | |
| From: Michael Dummett (Presupposition [1960], p.27) | |
| A reaction: Dummett observes that classical formal logic was never intended to be close to natural language. Term logic does have that aim, but the meta-question is whether that end is desirable, and why. |
| 19052 | Natural language 'not' doesn't apply to sentences [Dummett] |
| Full Idea: Natural language does not possess a sentential negation-operator. | |
| From: Michael Dummett (Presupposition [1960], p.27) | |
| A reaction: This is a criticism of Strawson, who criticises logic for not following natural language, but does it himself with negation. In the question of how language and logic connect, this idea seems important. Term Logic aims to get closer to natural language. |
| 1394 | Can the mental elements of a 'bundle' exist on their own? [Carruthers] |
| Full Idea: If the mind is merely a bundle of states and events, it must be logically possible for the various elements of the bundle to exist on their own. | |
| From: Peter Carruthers (Introducing Persons [1986], 2.iii (A)) | |
| A reaction: Depends how literally you take the bundle metaphor, and how much you are worried about 'logical' possibility (which only seems to mean imaginable). The answers to these questions do not have to be all-or-nothing. |
| 1395 | Why would a thought be a member of one bundle rather than another? [Carruthers] |
| Full Idea: What makes it true that a particular thought or experience is a member of one bundle rather than another? | |
| From: Peter Carruthers (Introducing Persons [1986], 2.iii (B)) | |
| A reaction: I'm not sure if you can answer this nice question without mentioning values. The mental events in are in my bundle because they matter to me (because they are related to my body, for which I am responsible). Compare picking my possessions out of a pile. |
| 1396 | We identify persons before identifying conscious states [Carruthers] |
| Full Idea: We can have no conception of the particularity of conscious states prior to, and independently of, a conception of a particularity of persons. | |
| From: Peter Carruthers (Introducing Persons [1986], 2.iii (C)) | |
| A reaction: agrees with Butler |
| 13304 | Learned men gain more in one day than others do in a lifetime [Posidonius] |
| Full Idea: In a single day there lies open to men of learning more than there ever does to the unenlightened in the longest of lifetimes. | |
| From: Posidonius (fragments/reports [c.95 BCE]), quoted by Seneca the Younger - Letters from a Stoic 078 | |
| A reaction: These remarks endorsing the infinite superiority of the educated to the uneducated seem to have been popular in late antiquity. It tends to be the religions which discourage great learning, especially in their emphasis on a single book. |
| 20820 | Time is an interval of motion, or the measure of speed [Posidonius, by Stobaeus] |
| Full Idea: Posidonius defined time thus: it is an interval of motion, or the measure of speed and slowness. | |
| From: report of Posidonius (fragments/reports [c.95 BCE]) by John Stobaeus - Anthology 1.08.42 | |
| A reaction: Hm. Can we define motion or speed without alluding to time? Looks like we have to define them as a conjoined pair, which means we cannot fully understand either of them. |