QUOTE : Before starting work on this book, we had to ask ourselves a question what is science fiction? Seemingly simple, but in reality the answer was hard to formulate. This is the definition we settled upon:<br />Science fiction is a member of a group of fictional genres whose narrative drive depends upon events, technologies, societies, etc. that are impossible, unreal, or that are depicted as occurring at some time in the future, the past or in a world of secondary creation. These attributes vary widely in terms of actuality, likelihood, possibility and in the intent with which they are employed by the creator. The fundamental difference between science fiction and the other "fantastical genres" of fantasy and horror is this: the basis for the fiction is one of rationality. The sciences this rationality generates can be speculative, largely erroneous, or even impossible, but explanations are, nevertheless, generated through a materialistic worldview. The supernatural is not invoked.