I have my misgivings about 3-D. I don't like the lack of blacks and whites, how it dulls the image, how the color gets corrupted. I don't necessarily like the experience of having heavy glasses in front of me.

I left Mexico for artistic survival. If I had stayed, I would have been forced by the government, who control the movie business, to direct TV shows or commercials or infomercials for the government.

Historically, there is a fight between the sound designer and the composer. You see them in the mixing room and they're always fighting because the composer wants the music to be heard and the sound designer wants the sound to be heard.

A budget is not an issue. I mean a budget is used if you need more weeks or more time or more elements, but the creative process is exactly the same. In some instances you become more of a boss when you are doing a small movie. So that is not so relevant. The only thing is that the bigger a movie is in terms of budget, is that there are more people giving opinions.

It's a cliche, but Americans are puritanical. In their movies, they are scared of sex, but they overindulge in violence. I could have cut a G-rated version of 'Y Tu Mama Tambien' that would have pleased the American ratings board, but it would have been five minutes long.

I guess I have a short attention span! I'm interested in new worlds, new universes, new challenges.

You can write a whole fiction, and you're talking to people who have gone through that, in real life. But the truth of it is that when you're talking to those people, you don't care about your movie anymore. You just want to hear about what they have gone through. You want all of the details. It's amazing.