Classical sociological theory is usually viewed as an account of the changing world in the long 19th century. It theorizes the great trans-formation from the agrarian, feudal to the industrial, capitalist mode of production (Marx), from Gemeinschaft to Gesellschaft (Tönnies), from traditional to rational social action (Weber). Like the late medieval theory of transition from nomadic pastoralism to urbanization or civilization by Ibn Khaldun (d. 1406), all but one of these theories are structural, and consider social change without direct reference to conscious human inten-tion and motivation. The one exception is Max Weber, who formulated his theory with reference to the (conscious) purpose and meaning of social action, and included conside...