抄録
In this paper I try to demonstrate the significance of constructivistic semantics in systems theory, especially in the theory of social systems. First, I briefly trace the developmental process of constructivism in systems theory (or cybernetics). Second, I make a sketch of the conceptual framework of constructivism. The important concepts are operational closure, distinction/indication and second order observation (or second order cybernetics). Several levels (or kinds) of meaning-constructing systems are distinguished. Third, I consider the epistemological implications of constructivism. Constructivistic semantics can be characterized as epistemology naturalized (according to Quine) and epistemology socialized. I also compare some characteristics of the syn-referential system model and the self-referential system model. And fourth, I briefly consider the theoretical implications of the constructivistic theory of social systems. In the context of difficulty or impossibility of intervention and steering between autopoietic systems, we must verify the theoretical properties of structural coupling.
