This isn't a how-to. It's not a biology text. It's not anthropology, sociology, or bigger than a bread box. What is it? Who knows. Stiller begins with a brief description of the way the brain functions--with all the big words, like neuron, in italics. (In case his readers' synapses are non-functional altogether, he provides a glossary, too, including more big words like genetic.) Whereupon he begins a dissertation on bedwetting, and proceeds from there to eating, smoking, sex, dope, and violent crime. No causes. No cures. No buy.