How Do You Know When You're Done?

Larissa mc farker talks to CNN about the process of interviewing people for her book. "I want them to feel that they've been deserted in the midst of this distressing story," says larissa, using only quotes from other people as an example. How do you know when you're finished doing your interviewing and research? It's funny, often the first interview is so revelatory and extraordinary, and others can be almost that much. But but many interviews are largely a matter of flushing out stories and thoughts that the person has luded to the first time you spoke with them.