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.

I think there's a vague sense out there that movies are becoming more and more unreal. I know I've felt it.

I don't particularly enjoy watching films in 3D because I think that a well-shot and well-projected film has a very three-dimensional quality to it, so I'm somewhat sceptical of the technology.

A hero can be anyone. Even a man doing something as simple and reassuring as putting a coat around a young boy's shoulders to let him know that the world hadn't ended.

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.

To be honest, I don't enjoy watching movies much when I'm working. They tend to fall apart on me a bit.