Abstract: | The bulk of sociological theory is based on a notion of “state”: mechanical-organic solidarity, feudalism, capitalism, socialism, folk-urban, and so forth. We propose a theory that social systems consist of actors and groups in constant motion. Further, we propose that the duality of actor and society generate a system that can be understood by using the concepts of complementarity, indeterminacy and the principle of relativity. Such a system is defined and the issue of social change is addressed. Basically, change is defined as an alteration in the motion of actors relative to the motion of groups. As the number of groups increases relative to the number of actors, the velocity of actors increases and the velocity of groups decreases. The increasing disparity of these velocities indicates greater social change. |