We are who we say we are. You think you see me-you don't. You see us without knowing which of us you see. Your photographs, polygraphs, fingerprints, DNA hints, and courtroom theatrics don't say who we are. We are who we say we are You are his brother, your twin. You see me but not him now, don't you? You are like us, identical twins, but you don't love your brother like I do mine. He is myself, and I am him. Today is your birthday, his too. Why...