The term "circulation" is often used in a rather unspecific way throughout different disciplines as Stefanie Gänger has shown and critiqued for the case of Global History (2017). Gänger explains this unspecific and cross-disciplinary use with the wide semantic range that the term has received in the fields of physiology, economics, and astronomy: on the one hand, it evokes the notion of an unbounded movement, as in the example of blood circulation; on the other, it creates an idea of wholeness and unity, similar to the planetary cycle, and the image of a self-evident process that is independent from concrete actors. In general terms, we understand circulation as a dynamic of recursive movements in space and time that keeps "literature" moving at a constant or changing speed in more or less stable spatial structures.