 This presents a significant worry for retrocausal approaches to quantum theory. If the main motivation for pursing the hypothesis of retrocausality is to recapture in some sense a classical ontology for quantum theory (see  §3.4),  then the Shrapnel-Costa theorem has made this task either impossible, or beholden to the possibility of some further story explaining how the contextual features of the model arise from some noncontextual footing. On this latter point, it is difficult to see how this story might be told without significantly reducing the ideological economy of the conceptual framework of retrocausality, again jeopardizing a potential virtue of retrocausality.