The Science Fiction and Fantasy subgenres are very often blurred, and, if you don’t set out with the intention of deliberately writing one or the other genre, it can be difficult to categorise a story that has elements of both genres. Science Fiction Science Fiction – which is shortened to SF, not “Sci Fi” – is used to describe hard- to medium-core science-based fiction. The science forming the background of the book can be hard science, such as nuclear physics, quantum mechanics, chemistry, biology, geology, genetics, robotics, etc – or it could be a soft science like psychology, sociology, anthropology, etc. Whatever the science discipline referenced, it forms a large part of the plot process. The current laws of the discipline must be followed, or, if broken, there must be an explanation for the fictional possibility of breaking or bending the laws. Sci-Fi Sci-Fi is the fun version of Science Fiction. Sci-Fi can play with concepts that would never be possible based on our ...