In this talk it is argued that the Quinean distinction between the ontology and ideology of a theory has two main problems: The problem of arbitrariness and the problem of dependence. It is shown that the first problem can be addressed by the help of the approach of carving nature at its joints (cf. Lewis 1986 and Sider 2011). The second problem can be addressed by the help of the approach of worldly conceptual engineering (cf. Cappelen 2019). Since it is possible to revise the original distinction between ontology and ideology in a combined account, one can get rid of both problems at once.
Christian Feldbacher-Escamilla is a member of the Faculty of the philosophy department of the University of Cologne and external fellow of the Duesseldorf Center for Logic and Philosophy of Science; Recent publications: "The Many Faces of Generalizing the Theory of Evolution" (APQ, 2021), "Cultural Inheritance in Generalized Darwinism" (PoS, 2020) both together with K. Baraghith, "An Optimality-Argument for Equal Weighting" (Synthese, 2020).