The scene: two dozen journalists file into a small auditorium on Microsoft's Redmond campus. Steven Sinofsky, head of the Windows division, and Panos Panay, general manager of Surface, make their way on stage, each with a tablet in hand. In every audience seat, an elementary-school-style desk with a wrapped parcel placed on top. Inside: a Wonka bar, along with a golden ticket. It's the day before Surface for Windows RT goes up for pre-o
