World literature is not an object, it's a problem. " This was Franco Moretti (2000Moretti ( : 55), famously, in 2000 But what is the problem of world literature today, two decades later? In broad strokes, the disciplinary challenge would seem to be the same: to devise methods and reading practices that offer alternatives to entrenched national and civilizational frameworks. Scholarship within world literature shares a fundamentally comparative urge, whereby different instantiations of literature are considered in conjunction. But "conjunction" is in fact the nub of the problem, as this is supposedly not just an older version of comparative literature under a new name. Instead, conjunction can be conceptualized through a wide number of temporalities, scales, geographies, generic constellations, languages and ideological perspectives-all of them susceptible to historical change.Moretti proposed a world-systemic model, inspired by Immanuel Wallerstein, which has since developed into a strong but by no means exclusive or uncontested methodological premise of world literature. Deep-time approaches focusing on imperial formations, translation-based approaches, Alexander Beecroft's (2015) ecologies of literature-all offer distinct ways of investigating conjunction and connection. What they do not always offer is mutual compatibility. Instead, the most productive way to delineate world literature today might be to consider it as a set of procedures and methods rather than a coherent body of theory. As a scholarly field, it provides in the first instance a space of conversation and intellectual exchange across specializations that may also enable reconfigured empirical and critical investigations within those specializations.This give-and-take among different disciplinary locations has shaped the work leading up to the four volumes presented here. Emerging from a long-running project based in Sweden, and involving researchers from comparative literature, anthropology, intellectual history and a range of language departments, the basic