Chapter Four, Tutorial Four In this chapter we will consider two concepts that involve Validity in SL First consider the following argument (and carefully note the antecedent!): Bob will attend law school It's pretty clear that this is an example of a valid argument. It has the right form. Of course, this form is the one we called MP.
But we can say more about being valid than just that it has the right form. Roughly
the idea of validity is that the truth of the conclusion is But as usual, we gave the official definitions in terms of possibility. Let's try to recall, an argument is valid if and only if ______. If and only if what??? Select the correct way to fill in the blank: |