Abstract
In this paper we focus on the methodological gap of a research program between social systems theory and systems sciences. Social systems theory by N. Luhmann focus on communication process as a macro social system. The macroscopic treatment of communication is recognized as a descent of the social research of collective representation by E. Durkheim. On the other hand the systems concepts such as systems boundary, self reference and social semantics are not shared between social systems theory and other systems theories. There exists a strong conceptual and methodological gap between them. In this paper we try to bridge the gap to reconstruct the social systems theory.
