[Elsa Dorfman]was well known. Certainly in the Boston area, she's well known as a portrait photographer. My wife always wanted to meet her and then there was some benefit where she was taking pictures.

I think we get into all kinds of difficulty by saying photographs should be taken in a certain way which guarantees their veracity. I think that's a slippery slope to hell.

I used to work as a private detective years and years ago. And my boss gave me this one very simple piece of advice about trying to figure out who to interview first in any investigation. His recommendation: Always pick the people who were fired. Pick the people who are pissed off.

If you want to trick someone with a photograph, there are lots of easy ways to do it. You don't need Photoshop. You don't need sophisticated digital photo-manipulation. You don't need a computer. All you need to do is change the caption.

I gave someone a perverse argument not so long ago about why advertising is better than movies. You want to hear it? Movies operate from a really disingenuous premise, that people are heroes. I know a lot of people and have had an opportunity over the years to observe them. Are they heroes...? Let's put it this way. Advertising tries something simpler and more believable: Products as heroes. I guess the idea is: When all else fails, put your faith in conditioner.

What's great about documentary genre, it seems to me, is that it can be experimental filmmaking. You have a license to do a lot of diverse things under the umbrella of "documentary."

In the case of The Thin Blue Line, I was surprised actually by many things. I was shooting down in Texas where the actual killer David Harris lived and I interviewed the town cop. He described these guys as being David Harris' partners in crime and even though they had criminal records and had committed crimes, they sued me! More often than not, the insurance company that protects you against this type of lawsuit will settle it with cash and contest it in a court of law.