A tribute to one of Silicon Valley's most influential and forgotten researchers at Xerox PARC event From SiliconValleyWatcher.com by Tom Foremski. Tom has started a series on one the the valley's early icons: Doug Engelbart. You might know him as the inventor of the mouse. How about Moore's law, and timesharing in which many users can share one computer? Paradoxically, it was timesharing that sparked the pc revolution.