Few titles are as direct as a question, and fewer still ask the one people actually ask. Why Does He Do That? puts it plainly, and the plainness is the point: this is writing that starts where a reader starts, with bafflement rather than theory.
Our catalogue shelves it three ways, under education and learning, personal development, and politics and society, and that spread is the most useful thing the data gives us. Material filed across all three is not being treated as a private puzzle to be solved quietly at home. It is being treated as a pattern with social shape, worth explaining carefully and at length. Lundy Bancroft takes fourteen hours over it, which is a serious claim on a listener’s time and a signal about how thoroughly the ground gets covered.