 Borges’ story is often quoted in illustration of the fact that no model—and no scientific theory—can include all characteristics of what it is intended to model (Weisberg 2013). Models and theories would be useless if they did: the purpose of both theories and models is to present simpler representations or mechanisms that capture the relevant features or dynamics of a phenomenon. What aspects of a phenomenon are in fact the relevant aspects for understanding that phenomenon calls for evaluative input outside of the model. But where relevant aspects are omitted, irrelevant aspects included, or unrealistic or artificial constraints imposed, what a critique calls for is a better model (Martini &amp; Pinto 2017; Thicke forthcoming).