When we talk about the geographical, ecological, ethnographic, historical, documentary, and cosmopolitan "turns" in relation to the work of practitioners of contempory art, what exactly do we mean? Are we talking about a ?reading strategy?? About an interpretive model, as would be derived from the linguistic turn of the 1970s, or rather about a stratigraphic structure that could be read across multiple cultural practices? Do we wish to read one system by means of another system, in a way that on...