That's what all these studios do: They recruit people who've seen certain films. It's this weird, fake science-y thing the studios call a "tool." That's a very scary process, because it can be used in odd ways. But then there's focus groups and stuff like that. I was so nauseous and terrified, and then you get the cards: very good, good, recommend.

In terms of my peer group, nobody's parents were dying of old age. There was no dialogue to have among friends. I had that experience, and then 10 years later, I started thinking about writing about it. It's obviously an indelible thing when that happens, and I wasn't looking for material at the time or anything; it just started becoming relevant to me.

Focus group was helpful in the way it always is when you make movies, especially with anything funny. You can find the right edit or the right beat. In terms of cutting and rhythm, I think it's essential to screen your movie before you lock picture.

Producer Ed Pressman had a book about Diane Arbus - it's the only biography that exists - and there had been many Diane Arbus scripts. Many. I don't even know how many over the years. And it's sort of a cursed project, for lots of reasons. There's probably some pile somewhere of all these weird attempts, all these portraitures that can't get made.

I did watching my films with an audience at the beginning when we went to Sundance and we screened The Savages there. I watched it, and I was just praying to God it worked, because we weren't even finished. I was just hoping it worked, so half of it was just, "Phew."

Writing is so... I don't know, it's such a practice, and I feel very unpracticed in it, because I'm not doing it every day. And I really need to do it every day. In other words, you spend all this time writing a movie, and then you stop, and then you're shooting the movie, and then you're cutting, and a year and a half goes by, because in the editing room, you're not writing.

Ideally, I'd prefer never having to be in a test-screening environment. Some famous director said "The group is smart, the individuals are stupid," about the experience of a test screening.