It is the nature of memoir and essay that memory is telling the story and these forms will never be as clean as journalism. In the best literary nonfiction the true rules that need to be followed are artistic ones. Those rules are developed in each individual book by each individual artist, and they should be judged that way, individually, not in a great hue and cry of moralistic oversimplification. Yes, it is wise for writers of memoir to hew as closely as they can to the facts. But my worry is that we will, as usual, overreact and learn too literal of a lesson. That in rushing to rein things in we will choke off what is creative and alive in the form.