Lately I have been speaking to as many audiences as I can about the need to focus on complex behavior rather than on complex systems. The reason is that there is no practical way to apply the notion of a “complex system” to practical decisions about program models, metrics, or methodology. But it is possible to make those decisions with respect to the things that complex systems do. I just completed a series of three short “coffee break” sessions on this topic for the American Evaluation Association.
Go here for the slides.
If you are a member of AEA you can also hear the audio presentation. Go here for the audio tapes.