Review for oral exam. Brothers, both extremely light sleepers, call me "abnormal" because I wake up at 3 am and turn on the lights in the living room. Can't quite explain why I'm a morning person, why my mind is at its sharpest in the wee hours of the morning. It's like asking why the grass is green, and so on. Sean says he thinks a thief has broken in because my footsteps are loud, and irritating noises emerge from the kitchen when I make a pour-over. I say, "If that happens, get out of bed, and make coffee for me." When my brothers wake up at six, they will complain of the same things. After a while, they regard me with pity—their 33-year old brother, still at his notes.