Recent trends within the social sciences have called into question the functionalist premises of social change. Giddens (1981) argues that 'We can pose as a counter-factual the supposition that every society which had survived over a period of time ‘must’ have acquired enough food, shelter etc. But this is not an explanatory principle; it merely calls for one’. (1981;21)

Therefore are such concepts simply crude explanations of process, that fail once applied to empirical evidence, within the disciplines of the social science, archaeology and anthropology. As the evidence, especially from the latter two subjects fails to fall neatly within any modern ideas we have of adaption or functionalism.

The main difficulty is perhaps the lack of a definition of adaptation and functionalism.

Thus can anybody offer a definition of these terms that may define what Evolution is, with reference to social change ?