“My analysis of living systems uses concepts of thermodynamics, information theory, cybernetics, and systems engineering, as well as the classical concepts appropriate to each level. The purpose is to produce a description of living structure and process in terms of input and output, flows through systems, steady states, and feedbacks, which will clarify and unify the facts of life.”

Source: Living Systems: Basic Concepts (1969), p. 126

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James Grier Miller24

biologist 1916–2002

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“Now "cybernetics" is the term coined by Wiener to denote "steersmanship" or the science of control. Although current engineering usage restricts it to the study of flows in closed systems, it can be taken in a wider context, as the study of processes interrelating systems with inputs and outputs, and their structural-dynamic structure. It is in this wider sense that "cybernetics" will be used here, to wit, as system-cybernetics, understanding by "system" an ordered whole in relation to its relevant environment”

Ervin László (1932) Hungarian musician and philosopher

hence one actually or potentially open
Source: Introduction to Systems Philosophy (1972), p. 38.

“With the subsequent strong support from cybernetics, the concepts of systems thinking and systems theory became integral parts of the established scientific language, and led to numerous new methodologies and applications -- systems engineering, systems analysis, systems dynamics, and so on.”

Fritjof Capra (1939) American physicist

Source: The Web of Life (1996), p. 46.

“General systems theory is a series of related definitions, assumptions, and postulates about all levels of systems from atomic particles through atoms, molecules, crystals, viruses, cells, organs, individuals, small groups, societies, planets, solar systems, and galaxies. General behavior systems theory is a subcategory of such theory, dealing with living systems, extending roughly from viruses through societies. A significant fact about living things is that they are open systems, with important inputs and outputs. Laws which apply to them differ from those applying to relatively closed systems.”

James Grier Miller (1916–2002) biologist

Miller (1956) "General behavior systems theory and summary". In: Journal of Counseling Psychology. 3 (2) 120-124. Cited in: Francis Ferguson (1975) Architecture, cities and the systems approach. p. 12

“The description of the evolutionary trajectory of dynamical systems as irreversible, periodically chaotic, and strongly nonlinear fits certain features of the historical development of human societies. But the description of evolutionary processes, whether in nature or in history, has additional elements. These elements include such factors as the convergence of existing systems on progressively higher organizational levels, the increasingly efficient exploitation by systems of the sources of free energy in their environment, and the complexification of systems structure in states progressively further removed from thermodynamic equilibrium.
General evolution theory, based on the integration of the relevant tenets of general system theory, cybernetics, information and communication theory, chaos theory, dynamical systems theory, and nonequilibrium thermodynamics, can convey a sound understanding of the laws and dynamics that govern the evolution of complex systems in the various realms of investigation…. The basic notions of this new discipline can be developed to give an adequate account of the dynamical evolution of human societies as well. Such an account could furnish the basis of a system of knowledge better able to orient human beings and societies in their rapidly changing milieu.”

Ervin László (1932) Hungarian musician and philosopher

E. Laszlo et al. (1993) pp. xvii- xix; as cited in: Alexander Laszlo and Stanley Krippner (1992) " Systems Theories: Their Origins, Foundations, and Development http://archive.syntonyquest.org/elcTree/resourcesPDFs/SystemsTheory.pdf" In: J.S. Jordan (Ed.), Systems Theories and A Priori Aspects of Perception. Amsterdam: Elsevier Science, 1998. Ch. 3, pp. 47-74.

“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

“In some regions, under especially favorable conditions, the level of organization reaches that of enormously heavy organic substances, such as protein molecules and nucleic acids. Now the basic building blocks are given for the constitution of self-replicating units of still higher organizational level: cells. These systems maintain a constant flow of substances through their structures, imposing on it a steady-state with specific parameters. The inputs and outputs may achieve coordination with analogous units in the surrounding medium, and we are on our way toward multicellular phenomena. The resulting structures — organisms — are likewise steady-state patterns imposed steady-state patterns imposed on a continuous flow… The organic systems themselves, define the supra-organic (ecological or social) community. Ultimately the strands of communication straddle the space-time region within which the primary systems have come together, and those of its layers which provide conditions favorable to such structuration become organized as systems in their own right. We reach the level of the global (ecological, and on earth also sociocultural) system.”

Ervin László (1932) Hungarian musician and philosopher

Source: Introduction to Systems Philosophy (1972), p. 83.

“During the 1950s and 1960s most of the work which was called cybernetics tended to focus on control systems in engineering or on applications of the concept of feedback in fields ranging from mathematics to sociology. At the 1970 meeting of the American Society for Cybernetics in Philadelphia Heinz von Foerster sought to redirect attention to the original interests which had led to the founding of the field of cybernetics. In a paper titled "Cybernetics of Cybernetics" he made a distinction between first order cybernetics, the cybernetics of observed systems, and second order cybernetics, the cybernetics of observing systems.”

Stuart A. Umpleby (1944) American scientist

Stuart A. Umpleby (1991) "Strategies for Winning Acceptance of Second Order Cybernetics." In George E. Lasker, et al. (eds.) Advances in Human Systems and Information Technologies. Windsor, Canada: International Institute for Advanced Studies in Systems Research and Cybernetics, 1992. pp. 97-196. (paper)

“General systems theory is a set of related definitions, assumptions, and propositions which deal with reality as an integrated hierarchy of organizations of matter and energy. General systems behavior is concerned with a special subset of all systems, the living ones.
Even more basic to this presentation than the concept of "system" are the concepts of "space," "time," "matter," "energy," and "information," because the living systems which I shall discuss exist in space and are made of matter and energy organized by information.”

James Grier Miller (1916–2002) biologist

Source: Living Systems: Basic Concepts (1969), p. 51; Opening paragraph

“The ‘theory of control systems’ in engineering is now a well-developed subject, making use of some remarkably powerful concepts and methods of analysis, especially in relation to problems of stabilization and the prevention of unwanted oscillations.”

Arnold Tustin (1899–1994) British engineer

Source: The Mechanism of Economic Systems (1953), p. v

“There are four distinct bases on which a system-design book might be organized. First are the chronological phases through which the system-design effort passes, such as organization and preliminary design. Second are the logical steps such as analysis of the single thread (operation on a single input) and high traffic (methods of handling multiplex inputs). Third are the parts of the system, such as communications and displays. Fourth are the tools of system design, such as information theory and queueing theory.”

Robert E. Machol (1917–1998) American systems engineer

Source: System Engineering (1957), p. 8

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James Grier Miller24

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