Many complex societal issues involve numerous competing arguments rather than a single, straightforward, indisputable answer. how does leslie stahl summarize the "conundrum" of the minimum-21 drinking law?

Leslie Stahl summarize the "conundrum" of the minimum-21 drinking law by proposing that the "conundrum" or confusing problem is that a law that has diminished highway deaths might add to an expansion in off roadway deaths.