The post-PC era already is over
That was fast, if it ever was. Don't blink or the so-called PC era will pass you by. For years, I've called it the cloud-connected device era because of the deeper meaning: Context. But more appropriately, the new epoch is contextual computing, which really extends a transition underway since the World Wide Web opened to the masses about 20 years ago. During the two earlier computing eras, mainframes and PCs, location defined the user. During the contextual computing era, the user defines location. If you listen to analysts obsessed with selling services to enterprises or companies like Apple, post-PC is all about devices. It's anything but.
Context is everything today. I started writing about the concept circa 2004, borrowing from my boss of the day -- Michael Gartenberg. The concept is simple: People are satisfied with what they've got on hand. In context of the airport, a hand-held game console is good enough, while at home the person prefers Xbox and big-screen PC. But because of the cloud connected to an increasing number of mobile devices, context is a much bigger, broader and badder technology trend.