"It was a great challenge. Let's make a great phone that we fall in love with. And we've got the technology. We've got the miniaturization from the iPod. We've got the sophisticated operating system from Mac. Nobody had ever thought about putting operating systems as sophisticated as OS X inside a phone, so that was a real question. We had a big debate inside the company whether we could do that or not. And that was one where I had to adjudicate it and just say, 'We're going to do it. Let's try.' The smartest software guys were saying they can do it, so let's give them a shot. And they did."