Particularly, the actors, to have analyzed the script in great detail from the point of view of their specific character. So that they have a handle on exactly where the character is in the chronology of things. In that sense the actors become your best check on the logic of the piece, and the way in which it all fits together. They become essential collaborators. The main thing is you have to work with very smart actors.

I'm very happy where 3-D is going, which is that it's becoming a choice - and thankfully, most people are still choosing 2-D.

The film that really struck me was Ridley Scott's Blade Runner. That was a film I watched many, many times and found endlessly fascinating in it's density. I think the density of that film is primarily visual density, atmospheric, sound density, moreso than narrative density.

For me, as a film goer, I like nothing more than to sit in the cinema, have the lights go down and not know what I'm about to see or unfold on-screen. Every time we go to make a film, we do everything we can to try to systematise things so we're able to make the film in private, so that when it's finished it's up to the audience to make of it what they will.

One of the things you do as a writer and as a filmmaker is grasp for resonant symbols and imagery without necessarily fully understanding it yourself.

Well, you always discover a lot in the editing room. Particularly the action, because you have to over-shoot a lot and shoot an enormous amount of material because many of the sequences have to be discovered in the editing and manipulation of it.

By the time I was 10 or 11, I knew I wanted to make films.