Science fiction is the parent genre of all postmodernism.
Indeed, s-f almost by its very nature defies our most willing attempts to believe in it as, in some sense, real. With Red Planet, we see something new, however. Po mo treats every other genre as if it were science fiction, emphasizing the artificiality of the artifice in a knowing, ironic way designed to elicit our admiration for its sheer cleverness. This, at any rate, is the charitable interpretation. I've been searching for God ever since.