 A rather logical outcome of this almost self-evident assumption is that one should first study the evolutionary regularities of simple systems and only after understanding them move to more complex ones, whereas Korotayev's findings suggest that the simplest regularities accounting for extremely large proportions of all the macrovariation can be found precisely for the largest possible system – the human world, and, hence, the study of social evolution should proceed from the detection of simple regularities of the development of the most complex systems to the study of the complex laws of the dynamics of simple social systems.From a complexity perspective Korotayev's establishes a key point, that of the bifurcations of social and kinship organisation that coalesced historically around the differential practices of the major world religions.It draws on the World Cultural database and the world religion as well as other variables.