Well that's the thing, we can't include anything because Yobmod claims we can only use themes that are exclusive to science fiction, which is just absurd because all science fiction themes can be used in fantasy (which can be called sci fantasy, but Yobmod refuses to list), horror (another which Yobmod refuses to list) and surreal comedy. For political structures I added two Ecology and Economics and cited them both, and Yobmod deleted them. If you check the history of this page others edited it but they didn't edit out any of the things Yobmod did, as they (or at least I) know that they can be science fiction themes. So I think that the only way Yobmod will be happy is if we stick with the edit I just made