The next time you hinge open that notebook PC and smile at a feature that makes it easier to use, give a thought to Bill Moggridge, who passed away Saturday from cancer at the age of 69. The pioneering designer invented the modern clamshell design seen in all modern laptops, and is also viewed as the father of human interaction software design. The Compass Computer he designed for Grid Systems with the screen folded over the keyboard appeared in 1981, flew on the space shuttle, and inspired virtually every notebook design since. Perha
