Academic disciplines tend to flower on different campuses at different times, like flash mobs. In the 1970s, a mob of young computer graphics pioneers flashed on the campus of the University of Utah: Jim Clark, who would go on to create Silicon Graphics; Nolan Bushnell, who would start Atari; John Warnock, who would create Adobe; and Alan Kay, who would help create the first graphics-enabled personal computer, the Alto, at Xerox.