First of all, I dont write science fiction. Ive only done one science fiction book and thats Fahrenheit 451, based on reality. Science fiction is a depiction of the real. Fantasy is a depiction of the unreal. So Martian Chronicles is not science fiction, its fantasy. It couldnt happen, you see? Thats the reason its going to be around a long time—because its a Greek myth, and myths have staying power.