 As with so many other challenges, timid modal fictionalism can immediately provide the outlines of an answer to this question. (Though it is to be remembered that timid modal fictionalism is able to avoid so many theoretical difficulties only because the fiction is not asked to do much theoretical work). If the truths of possibility and necessity (and conditionality, and other modal truths) obtain without dependence on the content of the modal fiction, it is surely reasonable to suppose that whichever fiction it is correct to employ, it must respect those independently obtaining modal truths. Strong modal fictionalists must also ensure that the contents of the fiction are associated with the modal claims they wish to make in the appropriate way, of course, but this will be of less help to them in establishing the content of the modal fiction. For if the content of the modal fiction is to explain the truth of the modal claims, it must be able to be fixed independently, on pain of circularity. This is especially so if the strong modal fictionalist holds, as one well might, that it is our understanding of the modal fiction that provides (perhaps implicitly) our epistemic access to which modal claims are true and which false. Giving a non-circular specification of the content of the modal fiction is one of the very difficult challenges facing the strong modal fictionalist.