The news that Gray was missing shocked the high tech community. The lanky coder had been a computing legend since the 1970s. His work helped make possible such mainstays of modern life as cash machines, ecommerce, online ticketing, and deep databases like Google. The Gulf of the Farallones, 2007 Photograph by Todd HidoIt looked like a fine day for a sail. On Sunday, January 28, 2007, Microsoft res