Mario: The field of cognitive science is not a genuinely autonomous discipline since it addresses issues also addressed by the disciplines of computer science, linguistics, and psychology. A genuinely autonomous discipline has a domain of inquiry all its own. Lucy: Nonsense. You' ve always acknowledged that philosophy is a genuinely autonomous discipline and that, like most people, you think of philosophy as addressing issues also addressed by the disciplines of linguistics, mathematics, and psychology. A field of study is a genuinely autonomous discipline by virtue of its having a unique methodology rather than by virtue of its addressing issues that no other field of study addresses. Lucy responds to Mario by ['establishing that Mario is not a philosopher', "questioning Mario's expertise in cognitive science", "showing that some of Mario's beliefs are not compatible with the principle on which he bases his conclusion", 'demonstrating that Mario confuses the notion of a field of study with that of a genuinely autonomous discipline']