Diversity plays a different role in a complex system than it does in an equilibrium system, where it often produces variation around the mean for performance measures. Offering an introduction to the role of diversity in complex adaptive systems, this title shows how diversity happens, how it is maintained, and how it affects complex systems. "Page engagingly seduces readers into rather deep ideas in complex systems, including sophisticated mathematical formulas, by using a relaxed style with lots of examples. Yet the treatment is rigorous."-Simon A. Levin, Princeton University