Reprint: R0809D Many people believe that good ideas are rarer and more valuable than good people. Ed Catmull, president of Pixar and Disney Animation Studios, couldn’t disagree more. That notion, he says, is rooted in a misguided view of creativity that exaggerates the importance of the initial idea in developing an original product. And it reflects a profound misunderstanding of how to manage the large risks inherent in producing breakthroughs. In filmmaking and many other kinds of complex...