Not sure he’s gone, Jim Gray’s friends and family say goodbye

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How do you memorialize someone if he might still be alive? The family of Jim Gray, a renowned computer scientist and A.M. Turing Award winner, has been grappling with that issue since the clear, calm day in January 2007 when he sailed his boat, Tenacious, into the San Francisco Bay and never came home.

The scientific community is gathering at UC Berkeley tomorrow for a daylong tribute to Gray. As Michelle Quinn writes, it’s part celebration, part science fair. Read the full story to learn more about Gray’s disappearance and how the group of world-class problem-solvers dealt with their inability to answer this question: What happened to Jim Gray?

-- Chris Gaither