If you haven't read any of Nassim Nicholas Taleb's books- you are doing yourself a disservice. Check out the presentation that he gave at the National Science Foundation- click through to read more.
Everything in life has nonlinear responses, from medical treatments to project management, for both benefits and harm (medical and economic iatrogenics). The talk introduces the concept of fragility and antifragility and maps them to nonlinearities in life and decision making. The presentation is adapted from Dr. Nassim Nicholas Taleb's recent book Antifragile: Things That Gain From Disorder.