John, MarcusMarcusJohn2022-03-042022-03-042009https://publica.fraunhofer.de/handle/publica/219665Complex systems become more and more important and challenging for the technological and economical development. In this article we try to define the term "complex system" and discuss some interesting features of it. Finally we try to elucidate the difficulties one faces, when one has to deal with complex systems.encomplex systemswarm intelligencetechnological megatrendtechnological impact620book article