CGI means, just to be clear, creating any type of image with a computer. Basically, starting off with nothing, or with images and manipulating them. The way we did it, everything was actual photographed images. A lot of that stuff was shot through a microscope of chemical reactions, yeast growing, lots of weird things, by Peter Parks. We put it into a computer and collaged it, manipulated it. Meaning we digitally shaped it to fit with other images. But there was no computer-generated imagery at all.

Casting ethnic characters is a very hard thing to do, but it's important. It's also interesting.

I wasn't a big fan of social anthropology. And, luckily, that created room for me to work in visual arts because I sort of ignored my requirements. I think I was attracted to social anthropology because I liked to travel and was always interested in far-off places.

I hope that Requiem is better than Pi. I hope that Pi is better than my student films, and I'm hoping that I'm getting better as I get older.

I don't think I make genre films. I think studios try to sell films as genres because they know how to do that. There's nothing wrong with that. I don't know what I make. It's sort of a pot roast, all my films.

I feel that so many sci-fi films and films in general have just become really dependent on and addicted to CGI, and that some of the big CGI films of the summer, you see these effects that look like crap. You don't know if you're watching a cartoon or something that's real. And I didn't want to fall into that trap. I really thought there was a way to use a lot of these old techniques to do some new and really neat stuff.

I think that there's an infinite amount of places where you can stick a camera. There's an infinite amount of choices of what could be going on. There's an infinite amount of places for so many things, so you have to figure out how to do your job.