Jobs' genius for creating products and his marketing talent have long been hailed. All of that comes through in Becoming Steve Jobs, Schlender's and Tetzeli's new book. They contend that Jobs was a far more complex and interesting man than the half-genius / half-jerk stereotype, and a good part of their book is an attempt to craft a more rounded portrait. What makes their book important is that they also contend—persuasively, I believe—that, the stereotype notwithstanding, he was not the same man in his prime that he had been at the beginning of his career. The inexperienced, impulsive, arrogant youth who co-founded Apple was very different from the mature and thoughtful man who returned to his struggling creation and turned it into a company that made breathtaking products while becoming the dominant technology company of our time. Had he not changed, they write, he would not have succeeded.