Cybernetics is a theory of control systems based on communication (transfer of information) between system and environment and within the system, and control (feedback) of the system’s function in regard to environment. As mentioned and to be discussed further, the model is of wide application but should not be identified with “systems theory” in general. In biology and other basic sciences, the cybernetic model is apt to describe the formal structure of regulatory mechanisms, e.g., by block and flow diagrams. Thus the regulatory structure can be recognized, even when actual mechanisms remain
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