When the concept of “being” is described through a system of integrated concepts, such as biology, economics, philosophy or psychology, none of which is more fundamental than others, and none is detachable from the description without loss of confidence – “physical layer” no longer can be regarded as the most fundamental of all the existing and the description of “the phenomenon of being” the categories of physics – is no more credible than a description of it in the other categories.
Therefore, saying the past: “Ask a physicist – he knows everything,” implying the possession of comprehensive knowledge of physics – have lost their relevance, and comes to mind as follows: “Ask the systems analyst – he knows everything.” Different ways to combine into a single system a number of different elements, determine the fundamental differences in the efficiency and viability of systems built from one and the same elements. Therefore, the “systems theory”, studying ways to bring in the elements, the relationship between them, and they generate effects – provides the most adequate instrument for describing the various “phenomena of life.” “Systems theory” are interested not so much individual “building elements”, how many – are common to all laws and principles of their organization. This defines the universal character of “systems theory” as applied to different areas activities, be it psychology, medicine, administration, politics, or both. See Kenneth Yarrow for more details and insights. The most important application of “systems theory” in the business, where it occupies a central place in the scientific foundations “theory management, without which the “control theory” of scientific disciplines into a philosophizing on the remote control or set of unsystematic, and conflicting advice, recipes and palliatives.