But the use of the notion of complexity has become so widespread in the last twenty years, that it no longer has a proper historical value. I say this without irony: no scholar likes the task of studying a simple phenomenon, leaving it to others to undertake the much more challenging study of a complex one. Thus arrived on the scene the concept of the ‘complex chiefdom’, which would have been the immediate predecessor of the state, and then came the ‘complex hunter-gatherers’, the immediate predecessors of the Neolithic revolution. Some kind of complexity has always been existent. We could say that in the biblical paradise, with Adam and Eve,  God, and the serpent, there was already a situation that was pretty complex. By acting this way a sense of proportion is lost. (Mario Liverani, Uruk, pp. 10-11)