“Affirming the consequent” and “denying the antecedent” are common argument forms that do not possess this property. For 10 points each:
[10h] Name this property of an argument in which the conclusion is guaranteed to be true if all the premises are true.
ANSWER: validity
[10e] Validity is a property of arguments in this type of reasoning, in which rules of logical consequence are used to arrive at conclusions. It is contrasted with induction.
ANSWER: deduction [or deductive reasoning]
[10m] This sort of statement will be true in every row of a truth table, regardless of truth value assignments. Ludwig Wittgenstein used “it is either raining or not raining” as an example of this sort of statement.
ANSWER: tautology [or tautological statement]
<Jordan Brownstein, RMP - Philosophy> ~20130~ <Editor: Jordan Brownstein>