In his book "The Lost World," a sequel to "Jurassic Park," Michael Crichton describes the way complex systems work.
"Complex systems tend to locate themselves at a place we call the edge of chaos. The edge of chaos is a place where there is enough innovation to keep a living system vibrant and enough stability to keep it from collapsing into anarchy. It is a zone of conflict and upheaval where the old and the new are constantly at war. Finding the balance point must be a delicate matter. If a living system drifts too close, it risks falling over into incoherence and dissolution. But if the system moves too far away from the edge, it becomes rigid, frozen, totalitarian. Both conditions lead to extinction. Too much change is as destructive as too little. Only at the edge of chaos can complex systems flourish."