This project builds on the intellectual exchanges begun by the Neubauer Collegium project “Fact and Fiction” (2016–17), while orienting them toward new research questions. The first project took the contested border between fact and fiction as the point of departure for a cross-disciplinary dialogue, in a moment where “alternative facts” and “post-truth” politics had become a central preoccupation in public discourse. The project leaders now turn to a different area in the study of fiction and fictionality: that of possibilities and impossibilities in and of fiction. Fiction has long been associated with possibility and plausibility—with the construction of plots that are governed by a certain causal logic. But how exactly does fiction model our understanding of what is possible in the real world? Conversely, how does our sense of what is possible in reality constrain what is perceived to be possible or impossible in fictional worlds? Finally, are certain subjects off-limits to fictional representation? If these questions are not new ones, they have taken on a renewed urgency in the twenty-first century: in a context where our “real-world” conceptions of possibility and predictability are shifting in the face of global crisis, how can (or should) fiction present current or future possibilities?