When you're not doing fiction, there's a limit to how much illustrating you can do with your work. I mean, you can do fine. There are great non-fiction writers, but people aren't necessarily going to say anything that reveals them as much as a picture might. Even their surroundings, in lot of cases, the things that meant the most to me were the things I noticed in their houses. I was always looking, as much as I was listening to them. I was looking around for clues as to why I was there.