According to W.R. ASHBY: "… because a change of parameter value changes the field, and because a system's stability depends on its field, a change of parameter value will in general change a system 's stability in some way" (1960, p.77).
"Change of parameter value may result in any change which can be produced by the substitution of one field for another: stable systems may become unstable, states of equilibrium may be moved, single states of equilibrium may become multiple, states of equilibrium may become cycles, and so on…
"… the relationship… is reciprocal: in a state-determined system, a change of stability can only be due to a change of value of a parameter, and change of value of a parameter causes a change in stability" (Ibid.p.78).
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Bertalanffy Center for the Study of Systems Science (2020). Title of the entry. In Charles François (Ed.), International Encyclopedia of Systems and Cybernetics (2). Retrieved from www.systemspedia.org/[full/url]
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