“In concept a feedback system is a closed system. Its dynamic behavior arises within its internal structure. Any action which is essential to the behavior of the mode being investigated must be included inside the system boundary.”

—  Jay Wright Forrester

Source: Principles of Systems (1968), p. 4-1 as cited in: Richardson, George P. " Reflections on the foundations of system dynamics http://obssr.od.nih.gov/issh/2012/files/Richardson%202011.pdf." System Dynamics Review 27.3 (2011): 219-243.

Adopted from Wikiquote. Last update June 3, 2021. History

Help us to complete the source, original and additional information

Do you have more details about the quote "In concept a feedback system is a closed system. Its dynamic behavior arises within its internal structure. Any action …" by Jay Wright Forrester?
Jay Wright Forrester photo
Jay Wright Forrester 7
American operations researcher 1918–2016

Related quotes

“In complex systems cause and effect are often not closely related in either time or space. The structure of a complex system is not a simple feedback loop where one system state dominates the behavior. The complex system has a multiplicity of interacting feedback loops. Its internal rates of flow are controlled by nonlinear relationships. The complex system is of high order, meaning that there are many system states (or levels). It usually contains positive-feedback loops describing growth processes as well as negative, goal-seeking loops. In the complex system the cause of a difficulty may lie far back in time from the symptoms, or in a completely different and remote part of the system. In fact, causes are usually found, not in prior events, but in the structure and policies of the system.”

Jay Wright Forrester (1918–2016) American operations researcher

Source: Urban dynamics (1969), p. 9

“Formulating a model of a system should start from the question “Where is the boundary, that encompasses the smallest number of components, within which the dynamic behavior under study is generated?””

Jay Wright Forrester (1918–2016) American operations researcher

Source: Principles of Systems (1968), p. 4-2; as cited in Richardson (2011)

Russell L. Ackoff photo

“Analysis of a system reveals its structure and how it works. It provides the knowledge required to make it work efficiently and to repair it when it stops working. Its product is know-how, knowledge, not understanding. To enable a system to perform effectively we must understand it—we must be able to explain its behavior—and this requires being aware of its functions in the larger systems of which it is a part.”

Russell L. Ackoff (1919–2009) Scientist

Source: 1990s, Re-Creating the Corporation (1999), p. 12.

Humberto Maturana photo

“A living system, due to its circular organization, is an inductive system and functions always in a predictive manner: what happened once will occur again. Its organization, (genetic and otherwise) is conservative and repeats only that which works. For this same reason living systems are historical systems; the relevance of a given conduct or mode of behavior is always determined in the past.”

Humberto Maturana (1928) Chilean biologist and philosopher

Source: Biology of Cognition (1970), p. 26-27.

Buckminster Fuller photo

“Synergy is the only word in our language that means behavior of whole systems unpredicted by the separately observed behaviors of any of the system's separate parts or any subassembly of the system's parts.”

Buckminster Fuller (1895–1983) American architect, systems theorist, author, designer, inventor and futurist

1960s, Operating Manual for Spaceship Earth (1963)
Context: Synergy is the only word in our language that means behavior of whole systems unpredicted by the separately observed behaviors of any of the system's separate parts or any subassembly of the system's parts. There is nothing in the chemistry of a toenail that predicts the existence of a human being.

Talcott Parsons photo

“The social system is, thus, a very complex entity. As an organization of human interests, activities and commitments, it must be viewed as a system and in functional perspective. This is the key to its lines of organization, its modes of differentiation, and its integration. Such a system may be considered as both structure and process, in different aspects and for different scientific purposes. Structurally, we have suggested that there is a double basis for systematizing differentiation and variation : that internal to the primary social system itself and that involved in its relations to its primary environments, as analyzed with reference to the general system of action. Processually, the categories of analysis must follow from and integrate with those of structure. I suggest that, given the central position language as definitive of human society, the more differentiated and specialized symbolic media of interchange constitute the master scheme for the systematic analysis of social system processes.”

Talcott Parsons (1902–1979) American sociologist

Talcott Parsons (1968) "Systems Analysis: Social Systems" in: David L. Sills ed. International Encyclopedia of the Social Sciences. p. 472

“A system is a set of things – people, cells, molecules, or whatever – interconnected in such a way that they produce their own pattern of behavior over time. […] The system, to a large extent, causes its own behavior!”

Donella Meadows (1941–2001) American environmental scientist, teacher, and writer

Page 2.
Thinking in Systems: A Primer (2008)

“An organization which depends solely upon its blueprints of prescribed behavior is a very fragile social system.”

Daniel Katz (1903–1998) American psychologist

Daniel Katz (1964) ""The motivational basis of organizational behavior". In: Behavioral science, 1964. p. 132

Christopher Langton photo

“A system in which a few things interacting produce tremendously divergent behavior; deterministic chaos; it looks random but its not.”

Christopher Langton (1949) American computer scientist

Christopher Langton in: Roger Lewin (1990) Complexity: Life at the Edge of Chaos New York, Macmillan. p. 12

“The Social System School: Closely related to the human behavior school and often confused or intertwined with it is one which might be labeled the social system school. This includes those researchers who look upon management as a social system, that is, a system of cultural interrelationships. Sometimes, as in the case of March and Simon, the system is limited to formal organizations, using the term "organization" as equivalent to enterprise, rather than the authority-activity concept used most often in management. In other cases, the approach is not to distinguish the formal organization, but rather to encompass any kind of system of human relationships.”

Harold Koontz (1909–1984)

Source: "The Management Theory Jungle," 1961, p. 179

Related topics