  McGee’s strategy is to invoke semantic notions instead of modal ones: he suggests that “[a] connective is a logical connective if and only if it follows from the meaning of the connective that it is invariant under arbitrary bijections” (McGee 1996, 578). But this approach, like McCarthy’s, seems to count \(\dq{\%}\) as a logical constant. And, like McCarthy’s, it requires appeal to a notion that does not seem any clearer than the notion of a logical constant: the notion of following (logically?) from the meaning of the connective.