"Now you may ask, what if my characters won't talk to me? What if they won't even visit? The only answer is to think and think some more, and then go out and read and look and listen some more. Do not sit and mope. Do not sigh. Do not throw up your hands and give up on the whole project. Do not go back to the drawing board. There is nothing more depressing than an empty drawing board. No, go back to the world, which is where all characters originally come from." ALLEGRA GOODMAN I crossed paths with a pair of Natural Born Killers tonight. Their voices grabbed my attention as I strode through the sunlit plaza connecting my office building with the transit center. The man -- we'll call him Mickey -- dressed in blue Adidas track pants, a wife beater and a flat-bill DC baseball cap -- was scratching violently at his face and arms. His girlfriend, Mallory -- in a matching wife beater -- screamed at Mickey from across the bus ba...