Bifurcation Diagram · Parameter space showing the disintegration of a system with one stable state, through bifurcations, into a chaotic system · Alexis Wilke & Benoit Ambry
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The breakdown of steady state equilibrium, via bifurcations, to a multistable system, and finally to chaos. Complex urban systems exist at the edge of this chaotic state. Whilst cybernetics was only equipped to deal with the dynamics of non-linear systems with single stable states, complexity science explored the breakdown to multistability and beyond.

See Also: Cybernetics, Complexity?, The Living City, Entropy, Superlinear