Abstract
This paper continues a debate on the normative limits of conceptual engineering. In particular, it responds to Manuel Gustavo Isaac’s (2021) claim, in response to Simion (2018a) and Podosky (2018), but in particular Podosky, that cognitive efficacy, rather than truth and knowledge, should be the normative standard by which we assess the legitimacy of a conceptual engineering project – at least for ideological concepts. I argue Isaac has not done enough to show us that truth and knowledge are insignificant for the conceptual engineering of ideological concepts.