The next level of causal texturing we have called the disturbed reactive environment. It may be compared with Ashby's ultra-stable system or the econ… - Fred Emery

A great deal of the thinking here has been influenced by cybernetics and information theory, though this has been used as much to extend the scope of as to improve the sophistication of formulations. It was von Bertalanffy (1950) who, in terms of the general transport equation which he introduced, first fully disclosed the importance of openness or closedness to the environment as a means of distinguishing living organisms from inanimate objects.

The further development of the open system thinking propounded by von Bertalanffy and Prigogine requires us to characterize the environments within which open systems are functioning. Four levels of environmental organization can be distinguished in terms of their causal texturing... Coming out from an academic cocoon to work at the Tavistock Institute in London I found myself trying to comprehend the behavior of very large organizations in the face of very devastating winds of change... The conceptual developments in that paper have continued to play a considerable role in my subsequent thinking.

The basic managerial idea introduced by systems thinking, is that to manage a system effectively, you might focus on the interactions of the parts rather than their behavior taken separately.