 One possible response the constructive empiricist might give here is a fictionalist account of mathematical objects. Embracing such a fictionalist view, an individual could use the theoretical apparatus of mathematics without committing herself to the existence of the objects that are the alleged subject matter of mathematical theories. Rosen (1994) considers this response but contends that it is not one that a constructive empiricist may want to accept. The problem, Rosen says, is that to embrace fictionalism about a theory T that one accepts commits one to believing claims of the following form: