• the march toward complexity has turned into a sprint in the debate about health care reform and even the gargantuan oil spill in the Gulf of Mexico, challenges so baroque, and with so many disparate and moving parts, the best you can do is hope that someone in charge understands them. Complexity used to signify progress — it was the frisson of a new gadget, the riddle of some advance in technology. Now complexity lurks behind the most expensive and intractable issues of our age.