1991 Serwer : Wal-Mart has been wildly successful since Sam's death. At Apple, Tim Cook took over a year ago, and now the company's market capitalization is $270 billion bigger, and the question everyone asks is, "What's going to happen at Apple?" This is a pretty good template, right? Isaacson : Apple's future as a company was one of the things that a year ago Steve was obsessed about. He had gone in at the end of August to tell the board that he was stepping down as CEO. And everybody on the board is very sad, and then they try to jolly things up, and they talk about how Hewlett-Packard ( HPQ ) had just gotten out of the tablet business that day, was screwing things up, and he said something like, "Wait a minute. Bill Hewlett gave me my first job. When I was 13 years old and needed a part, I called him from the phone book, and he gave me a summer job, and he and David Packard thought they'd made a company that was going to outlast them and continue to grow for a generation, and these bozos have screwed it up . Don't let that happen to Apple." He said, "Here's what's in our DNA at Apple. We stand at the intersection of art and science; at the intersection of creativity and technology." And he said, "That's been in the DNA of great companies. That's why Walt Disney ( DIS ) -- even though