Systems theory or general systems theory or systemics is an interdisciplinary Interdisciplinarity article field which studies systems System article as a whole. Systems theory was founded by Ludwig von Bertalanffy Ludwig von Bertalanffy article , William Ross Ashby William Ross Ashby article and others between the 1940s 1940 article and the 1970s 1970 article on principles from physics Physics article , biology Biology article and engineering Engineering article and later grew into numerous fields including philosophy Philosophy article , sociology Sociology article , organizational theory Organizational theory article , management Management article , psychotherapy Psychotherapy article (within family systems therapy Family systems therapy article ) and economics Economics article among others. Cybernetics Cybernetics article is a related field, sometimes considered as a part of systems theory.
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