Our aim in this section was not to deal with the details of the heated controversy
concerning sensitivity to scope see, for example, Carson and Mitchell, 1995;
Frederick and Fischhoff, 1998.. Our goal is both simpler and more ambitious: we
hope to have shown that inadequate sensitivity to scope in CV surveys that employ
the quantity design is inevitable, because this phenomenon is an instance of a broad class of similar effects that have been observed in diverse contexts and are
explained by a single psychological principle