If it doesn’t support your plot and it’s not necessary to give the reader a strong sense of place, you don’t need it. It may reassure you to know that even your imagination needs to operate within a few guidelines.įor one thing, there’s the golden rule of worldbuilding: When the only limit is your imagination, how do you even know where to begin? Or where to end, for that matter? Sci-fi worldbuilding can get pretty overwhelming, especially when there’s a fantasy element.