When you start talking about the known knowns and the unknown unknowns, you're thrown into a crazy meta-level discussion. Do I know what I know, do I know what I don't know, do I know what I don't know I don't know. It becomes a strange, Lewis Carroll - like nursery rhyme.

I like to think that every movie emerges from the conversations.

This uses a lens system, which I have used for years in various different ways, but I've never used it in the context of an interview. This is the very first time that I've done that. It's a lens called The Revolution, so it allowed me to interview Elsa [Dorfman] and actually operate the camera. Well one of the cameras, because there were four cameras there.

People think in narratives - in beginnings, middles and ends. The danger when you edit something too severely is that it no longer makes sense; worse still, it leaves people with the disquieting impression that something is being hidden.

Not suing others does not mean that others won't sue you.If people are desperate enough to think that they can gain some kind of financial advantage, they'll sue.

I like to think that I differ from other interviewers in the sense that I hide my agenda more successfully, and I'm more open to hearing stuff that is surprising and unexpected. That I'm actually involved in an investigation, through monologue, at times.

Did you know that Nuremberg courtroom was designed so that the Allies could project movies during the trial? And, also so that they could film the trial? The first movies that were shown were prepared by John Ford - a compilation of material from the liberation of Bergen-Belsen and Dachau. But here comes an interesting part. Did you know they lit (using fluorescent tubes) the defendants so they could be filmed watching the films that were shown during the trial?