You might think that someone who spent twenty-one years conducting and overseeing FBI investigations would be inclined to look at the world retrospectively. A lifetime of trying to figure out what happened, after it happened, might have you constantly looking backward. An organized-crime figure is discovered dead—who did it, and why? Somebody set off explosives at the Boston Marathon—how did they do it, and where did they go?
But I know the past is only part of the story.