Growing up, I had few friends; those I did have were not the greatest. I brought up one boy, Jack, who I'd considered my best friend from first through third grade. I hadn't talked to him since high school. "I'm not sure what's happened to him," I said to my friend. "He could be dead for all I know." On a whim I looked up my old best friend on Facebook, and...yep, sure enough, he was dead.