When I said that something was going to cost a certain amount of money, I actually knew what I was talking about. The biggest problem that we were having on the financing front was people with lots of money saying "you need more money to make this film [Moon]," and us saying "no this is the first feature film we want to do it at a budget where we sort of prove ourselves at the starting end of making feature films; we can do this for $5 million." That is where the convincing part between me and Stuart came, we had to convince people with money that we could do it for that budget.

My biggest difference with our film and those kinds of science fiction films is that they are going from one special effect set piece to the next, what we were doing was more of a character study. And I think that is the freedom that you get by doing an Indie film. You can only really do that with a lower budget. So I understand where the conflict is between those two priorities.

The beauty of science fiction is its open canvas. You can hypothesize about any element of the world. It doesn't have to be laser battles and things exploding, you can be JG Ballad and maybe just change one little thing about the real world and that becomes science fiction.

I've worked really hard to build up a career on my own. I turned 30 recently and it took me a long time to get the chance to make a feature film and do it on my own terms.

I really don't see CG as a goal in its own right. I really do believe it's a tool. In the advertising industry I did a fair amount of CG, so I appreciate it for the tool that it is, and I think technologically where it's at now, you really can achieve most of your visual goals with either it or a mixture of it and practical effects.

And as a first time director I needed to work with someone that I felt comfortable with, and that I could get along with. It was a perfect match [with Sam Rockwell]; I am so thrilled I got to work with him. He is a really nice and incredible guy.

I think I was brought up with games and I don't think that they're just Pac-Man or Space Invaders. I think we've moved on, I think that there are stories being told and worlds being explored.