I do think that it's always okay to show too little. People will still be interested. So why show too much?

There's no question that how Johannesburg operates is what made me interested in the idea of wealth discrepancy. 'Elysium' could be a metaphor for just Jo'burg, but it's also a metaphor for the Third World and the First World. And in science fiction, separation of wealth is a really interesting idea to mess with.

There are loads of sociopolitical, racial, class and future-planet situations that really interest me, but I'm not really interested in making a film about them in a film that feels like reality because people view that in a different way. I like using science fiction to talk about subjects through the veneer of science fiction.

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.

If you don't have something that glues the audience to the screen, you're in trouble.

If the population curve is on an exponential growth, and the resources are on an exponential decline, what happens first is you get increases in wealth discrepancy, which means that you get rich pockets of gated communities with security guards outside them, and you get more and more poverty outside that area.

If you just compare South Africans to the rest of the world, I think that white South Africans, and especially English-speaking white South Africans, are exactly the same as Brits or Australians or New Zealanders or Canadians or Americans.