It is a central theme of this work that population growth, technological, and social change are, where present, systematically related and that far from there being a single ‘prime mover’, one element which drives the whole system, those factors move together in pulses. Further, that a burst of change results in a new social configuration that is stable not only in regard to social organization, but which is also relatively static in its demography and technology. Conversely, where rapid and profound changes are seen to occur in those factors, then we should expect that a new social configuration is coming into being.