I always thought the editor should cut the film and so I'll come in and look at the movie. Just because that's the only way I can really see the ideas of the editor, it's really working together. Yes it's a hierarchy, yes I'm the boss, but I like to see and to think about the idea, and it's about us asking, 'do we have to say that?' and, 'how do we make it there?' So it's advising the editor, it's very give and take, it's very free, but in the end, it's wonderful once you get through the first couple of cuts.

Various studios are still shooting on film with digital grain and the DI negatives, it's not ideal. We should really be all film or all digital. But that being said, the old way of graining in the camera, now you can make changes like a painter. It's dangerous because you can ruin the film, you can over-fiddle. We've all seen films and gone 'what the hell is that?'

Casting is always critical but in this case, 'The Way Back', I was looking internationally to a degree for an interesting mix of gentlemen, Irish, Polish, Russian and American. Not many people had the qualifications, people who would play the game, particular to this industry. So I had to research amongst the cast. They had to be very very prepared as we had to start shooting as soon as we could, there wasn't any time to talk, and there would only be three or four takes.

Well, all these stars have their houses swept quite regularly by people who work in the surveillance security business. They come in and they look for bugs and things.

I've done a number of things that get categories closed off in a way, so when I read 'The Long Walk' by Slavomir Rawicz and decided to do film, 'I thought, you know, this is going to be wonderful,' two and a half years, three years, whatever it was.

So much of the work is intuitive. The resistance you detect is just that, a kind of evasion, a sense that too much analysis will inhibit creativity.

Movies tie things up in an arbitrary length of time, but I have always liked things that aren't fully realised.