I read Pulitzer-winner Katherine Boo’s book, “Behind the Beautiful Forevers’’, first with a growing sense of outrage and later, with a sense of despair. Character development. An acute ear for dialogue and idiom. A sense of place. These are the essential ingredients of a good novel. So what’s a fiction writer like me supposed to do when Boo employs all these techniques and writes a book of non-fiction so stellar that puts most novels to shame?