Interviews, when they are just simply an exercise in hearing what you want to hear, are of no interest. And many, many, if not most interviews have that character. The interviewer who comes in with a list of bullet points they're going to address one after the other. Interviews, properly considered, should be investigative. You should not know what you're going to hear. You should be surprised.
Errol MorrisThe way I go about making a movie... even the ones that are interview-driven, I go into them not knowing what's going to happen, and feeling my way through.
Errol Morris