What's Next For the iPad? A Tabletop iPad, According to Xerox PARC Circa 1991

Way back in 1991, just as Apple was transitioning from 68k to PowerPC chips, the braniacs at Xerox PARC were predicting it's entire iPod, iPhone and iPad strategy. And next up for the iPad is a blackboard-sized device.
Nearly 20 years ago, just as personal desktop computers were taking off, researchers at Xerox started thinking about [...:]