Dr. Kopits takes me into an examining room and leans against the stainless steel bench and asks me what I'm writing about this time. When I tell him what I saw in Australia, he immediately starts to nod. "This is a great subject," he says. Then he stops, as if caught by the subject himself. I wait. After a moment, he continues. "What you are looking into is the abyss. This takes you to the very heart of a human being, to the deepest...