 This dilemma is false, however. The way Ford (and to some degree Berry among others) describes things bespeaks a common misconception of the relationship between the quantum and classical domains. Much as he makes of the subtlety of limiting relations—and they are much more subtle than he realizes—his discussion of the correspondence principle actually turns on an overly simple relationship between the quantum and classical domains. That overly simple relationship presupposes that quantum mechanics fully explains classical phenomena, or, alternatively, that quantum mechanics reduces the classical domain in an appropriate limit. Under such a presupposition, if classical chaos either does not exist in quantum mechanics or if the latter cannot explain or reproduce classical chaos, then it appears that there is some inadequacy with quantum mechanics. 