I feel like I'm getting a second doctorate. My first one was in English—I am a scholar of 19th-century British literature—but in the past six months, I have been boning up on subjects entirely alien to my thought processes: neurobiology, biochemistry, genetics, behaviorism, psychiatry, audiology, speech-language pathology, nutrition, and occupational therapy. I feel at times as though I am living a scholar's nightmare—you know the one, where you are back in graduate school and have just realized that your oral examination is next week but you have not studied at all. I wake up from anxiety dreams into an even worse reality, scrambling, confused, and nagged by the conviction that no matter how much studying I do, I will always be unprepared. But the stakes are so much higher now. This time I am not studying to get a Ph.D., but fighting for my son's life...