“The ‘hard’–science fiction writers dismiss everything except, well, physics, astronomy, and maybe chemistry. Biology, sociology, anthropology—that’s not science to them, that’s soft stuff. They’re not that interested in what human beings do, really. But I am. I draw on the social sciences a great deal. I get a lot of ideas from them, particularly from anthropology. When I create another planet, another world, with a society on it, I try to hint at the complexity of the society I’m creating, instead of just referring to an empire or something like that.”