Timeline for Does a proposition have to have a true conclusion?
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 9, 2021 at 21:05 | history | bumped | CommunityBot | This question has answers that may be good or bad; the system has marked it active so that they can be reviewed. | |
| May 11, 2021 at 7:35 | comment | added | Mauro ALLEGRANZA | An argument has a conclusion. | |
| May 10, 2021 at 12:20 | comment | added | Logikal | The passage is stating that you can't derive a false proposition from an argument that has all true premises & follow all the rules of argumentation. You must violate at least one rule to purposely come up with all true premises & your conclusion is false. In Mathematical logic one can make premises any kind of way but this is not true on other systems of logic. There are other types of logic. Mathematical is the main one used these days. The definition of proposition is not accurate in math. Propositions are not literally verifiable. You don't see or hear propositions. Other logic show this. | |
| May 10, 2021 at 10:46 | comment | added | Conifold | The second one only says that it is impossible for a proposition that "has been demonstrated" to be false. Not even every true proposition has been demonstrated, and false propositions cannot be (soundly) demonstrated at all. | |
| May 10, 2021 at 5:30 | answer | added | Double Knot | timeline score: 1 | |
| May 10, 2021 at 5:08 | comment | added | Hypnosifl | The first one is about propositions in general, the second is about the propositions in a "sound argument". All the propositions in a sound argument must be true, but you can have logically "valid" arguments which are not "sound" because at least one proposition in the premises is false, and you can also have arguments that are neither valid nor sound. | |
| May 10, 2021 at 4:42 | review | First posts | |||
| May 24, 2021 at 4:42 | |||||
| May 10, 2021 at 4:37 | history | asked | Vidha Yadav Ganji | CC BY-SA 4.0 |