 A comparable type of outlook is endorsed by Edouard Machery with regard to our concept of (ironically) concepts (Machery, 2008). Machery argues that because our folk notion of concept corresponds to such a heterogeneous group of scientific kinds of stored information — including prototypes, exemplars, and theories — then psychologists would be better off just using these scientific categories and abandoning talk of concepts altogether. Similar sorts of arguments have been leveled against the folk categories of belief (Stich, 1983), pain (Hardcastle, 1999), consciousness (Irvine, 2012), and mental illness (Murphy and Stich, 1999).