Beyond metaphors and into the digital future : In 1973, Xerox PARC introduced the Xerox Alto. It was the first computer to support an operating system based on a graphical user interface. This began the desktop metaphor; the computer monitor as if it were the top of the user's desk. Forty-six years later, the metaphor lives on. We talk about files and documents— even when there’s nothing to print. Why are we still hung up on the desktop? Can we imagine a digital future free of off-screen comparisons? Paul and Rich ponder the possibility, and more.