 An interesting, relatively recent question is why the use of cognitive metaphors in describing biological agency is widespread, if not ubiquitous (R.A. Wilson 2005: ch.4). Explorations of this question have involved some interesting integrative thinking across the philosophy of biology, cognitive science, and the philosophy of economics (Godfrey-Smith 2009: 142–145; Dennett 2011; Nicholson 2018; Okasha 2018). Four responses to this question give some idea of the diverse literatures relevant to answering it. 