What Apple can learn from the Microsoft Surface Pro

A few months ago, I decided to conduct an experiment. After working on Mac laptops for more than 10 years, I bought myself a Microsoft Surface Pro. For anyone unfamiliar, the Surface is a "hybrid" device: It's a tablet, like an iPad, with a touchscreen. But it also runs the full blown Windows operating system. The iPad, by contrast, runs Mac's mobile operating system — iOS, the same thing iPhones use — instead of its PC or laptop operating system. It's been a mixed experience. I love...