I'm trying to find counterexamples for the following argument forms, where premises are in fact true (not merely possibly true) and the conclusion is in fact false (not just possibly false).
I can only think of counterexamples where the conclusions are merely possibly false, but I was wondering if it is possible to have definitely false conclusions??I've been racking my brains for ages...
1. a only if not b. Not b. Therefore, a.
2. If neither c nor d, then e. Not e. Therefore, c.
And actually passed?