CGI means, just to be clear, creating any type of image with a computer. Basically, starting off with nothing, or with images and manipulating them. The way we did it, everything was actual photographed images. A lot of that stuff was shot through a microscope of chemical reactions, yeast growing, lots of weird things, by Peter Parks. We put it into a computer and collaged it, manipulated it. Meaning we digitally shaped it to fit with other images. But there was no computer-generated imagery at all.

When people think about the ark, they're always thinking about all the thousands of years of religious iconography of a ship with a bow and a deck, where Noah and the giraffes could walk around. In the actual written text it is basically described as a long, rectangular box.

As filmmakers, we can show where a person's mind goes, as opposed to theater, which is more to sit back and watch it.

The only way I know as a director is to figure out what the film is about. And out of the theme and the sense of what the film is about, all those decisions start to make sense. But to find that truth within it, you have to limit your possibilities and limit your choices. That's where this visual language grows out of.

The whole visual language of the movie is developed way before we get to set. Especially when you're doing visual effects and you don't have a lot of money to mess around, which we didn't, you have to really preplan everything. Pretty much every shot in the film was figured out months before we got to set.

Noah is the battle of justice versus mercy. In Genesis it says that Noah was righteous in his times. You think you sort of know what righteous means, you know, if you listen to a lot of Bob Marley. According to all the biblical scholars we talked to, righteousness is the proper balance of justice and mercy. If you think of that, as a parent, you know that if you have too much justice and you're too strict, you destroy a child. If you have too much mercy, as a parent, you destroy a child as well. A big part of this movie is Noah finding mercy for man.

Every film had its own grammar. And it's your job as a director to basically figure out a language to tell a story.