Evolutionary systems are a type of system, which reproduce with mutation whereby the most fit elements survive, and the less fit die down.[1]
One of the developers of the evolutionary systems thinking is Béla H. Bánáthy.
[2] Evolutionary systems are characterized by "moving equilibria and the dynamics of coevolutionary interactions which can not be foreseen ex ante."[3]
The study of evolutionary systems is an important subcategory of Complex Systems research.