Is the keyboard going to be replaced by voice, or maybe even, brainwave input? Is the mouse going to go away as an input device? Not entirely, says Johnny Lee. While large and small devices are operated with remotes and touch screens, the human-scale device, featuring a keyboard and the mouse, is still the main tool for real productivity. HDTV and smartphones, not so much—Lee says that touch and remote suffice for the cunsumption of media, but not for getting serious work done.

Given the various uses of devices, Lee believes I/O will not converge into a single method, but each method will become more suited to serving the specific task requirements devices are used for. He offers a new equation for UX, and says form factors will continue to diverge.