A lot of parts of L.A. are interchangeable with suburbs in Joburg. Very big, ostentatious houses with palm trees and lawns. Lawns are very important. Never underestimate lawns.

High-level actors can be all about their close-ups and the size of their trailers. I'd heard these horror stories of how a really powerful actor can come in and change your script.

I grew up as an artist. Science fiction allows for design and creatures and guns and all the stuff that I like as well. So I think most of the films I make, I'm sure, will be in that category. But I can also see myself making a film like 'Black Hawk Down,' and I could also totally do horror.

If you look at the most meaningful science fiction, it didn't come from watching other films. We seem to be in a place now where filmmakers make films based on other films because that's where the stimuli and influence comes from.

'District 9' was a singular anti-Apartheid metaphor, and 'Elysium' is a more general metaphor about immigration and how the First World and Third World meet. But the thing that I like the most about the metaphor is that it can be scaled to suit almost any scenario.

I had artists that refused to work on Chappie if they were working on a design that actually said Denel on the side of the thing. But anyway, it's the blurring of fiction and reality that was appealing and I certainly did not want them to be in the movie and not be themselves.

I think naturally I'm a very visual kind of person. If I wasn't in filmmaking, I'd be in something related to visuals. And I used to actually work as a visual-effects artist.