The minds at Pixar Animation Studios, responsible for an almost unprecedented string of original hit movies, believe in failure. The philosophy of the studio's heads is to get all the failures out of the way early, and keep polishing. As President Ed Catmull has written, "Management's job is not to prevent risk but to build the capability to recover when failures occur."
That's not the way things have worked in government. Failure has not been an option. When America's greatest government bureaucracy was built up in the 1940s, it was wartime and the consequences of mistakes were dire. Often processes were conceived and executed by military veterans who associated imperfection with laziness, recklessness and death. After all, you can't make a mistake with an atom bomb, or planning an invasion, or sneaking a rocket scientist over the Berlin Wall.