I think a lot of people do big movies not because they are talented artists but because they can function in the circumstances.

I don't have a checklist. Whatever material excites me, they'll call for a certain genre or combination of genres. It'll come naturally and I'll be eager to learn how that thing works. I learn the rules, and I'll probably break some of them.

First we pre-visualized it [the flying fish scene in 'Life of Pi'] so the actors could act. It took a long time to get that to come to life and to design those coming out of the screen. We had great fun with that. It takes a long time, a year maybe.

So it [3D] is something I'm still learning, it's fresh, so if the budget allows I'll do it again and just see how far it goes because it's the frontier, it's more interesting. It's still expensive, the projection system can be annoying sometimes, it's not really regulated or perfected yet, so it's still expensive. If I do a lower budget I'll just do 2D, but if the budget allows I think I'll try 3D.

When there is a strong woman character in a story - that always grabs me

When you go for something because you're curious about it, you get psyched up about the chance of getting into it. It's like an actor meets a role, and you slip into that body and see what happens, to experience certain conditions, to adopt a certain character. Even shooting is a study of the character. I think both the character and the actor, and eventually the filmmaker - myself - are finding a way to accept their environment and being accepted and feel comfortable of themselves.

I find it hard to deliver straightforward things.