It is worth noting that not all philosophers who advertise themselves as engaging in “conceptual analysis” are committed to the idea that this involves analytic a priori knowledge. In many cases philosophers who describe themselves in this way go on to explain that in their view “conceptual analysis” is a matter of articulating synthetic claims and assessing them against a posteriori evidence. A particularly clear version of this picture of conceptual analysis is offered by Robert Brandom (2001). Similarly, recent advocates of “conceptual engineering” are explicit that in their view “concepts” embody substantial commitments which are open to criticism on a posteriori grounds (Cappelen 2018, Cappelen, Plunket and Burgess 2019). In the end, it is not clear what differentiates “conceptual analysis” in this sense from the a posteriori assessment of theories. In any case, this species of conceptual analysis seems perfectly consistent with methodological naturalism. (See also Goldman 2007.)