"Sci-fi was always understood to be politically based. It’s a way of setting up a political message in a format that people can digest. If you tell somebody “That person’s a liar,” they can say, “No, I saw him last week and I trust him.” But if you make them a reptile and give them the same information, they’ll say, “Yeah, he’s a reptile. They all lie.” That’s the great thing about sci-fi."