Flatworldism is a view on the nature of reality according to which reality’s inhabitants are not sub-dividable into the more and less fundamental such that what is more fundamental (at least sometimes) makes what is less fundamental exist and be the way it is. Flatworldism is a view I have so far tended to reject in favor of its opposite: (what I will call) The Layered Conception of Reality. This conception of reality—I have told myself (and whoever wants to listen)—is clearly preferable to Flatworldism. But (why) is it preferable? In this paper, I take a first step towards answering that question by defending Flatworldism against some of the arguments that have been raised against it.