Page "Complex systems" Paragraph 18

Complexity theory is rooted in chaos theory, which in turn has its origins more than a century ago in the work of the French mathematician Henri Poincaré.

Chaos is sometimes viewed as extremely complicated information, rather than as an absence of order.

The point is that chaos remains deterministic.

With perfect knowledge of the initial conditions and of the context of an action, the course of this action can be predicted in chaos theory.

As argued by Ilya Prigogine, complexity is non-deterministic, and gives no way whatsoever to precisely predict the future ( see also ).