With the Abu Ghraib photographs I was never interested in the question of how our soldiers came to torture other human beings, or even in how Dick Cheney came to authorize it. That Dick Cheney is pro-torture surprises no one; he freely admits it. That soldiers do terrible things during wartime should not surprise us.
So at some point the book became about the darker impulses we all carry within us, which led me to examine my own darker impulses. The only way to break out of these darker impulses, for me, was to make a human, face-to-face connection with some of the ex-detainees from the photographs. This is always the only way out.