2 upvotes, 2 direct replies (showing 2)
View submission: What makes an argument valid?
Perhaps it's easier to see if we just use a tautology. So,
1. q
2. Therefore, p v ~p.
The argument is valid, and indeed the conclusion cannot be false. Depending on our natural deduction system, the conclusion will be easily derivable from the particular rules we are using.
Comment by chinstrap at 28/01/2025 at 01:32 UTC
3 upvotes, 0 direct replies
"Validity is not a term of praise." - W.V.O. Quine
Comment by ConceptOfHangxiety at 27/01/2025 at 22:46 UTC
2 upvotes, 0 direct replies
Thank you; that clarifies.