@mikebaarda @DocCarms @bookstodon I think you have a point, but it's kind of context-dependent. Personally, when I read that line, sure my interest is piqued a little, but I'm also immediately primed to be looking for an explanation of the things you mentioned, and I'm not likely to have a good time reading the story until I start getting that explanation (or at least some justification for why I need to wait for it, like if the POV character is trying to find out). So it's kind of a high-risk high-reward maneuver: an opening line that introduces mysterious terms for story elements (such as, but not limited to, characters) can backfire badly if the rest of the story doesn't deliver details at the right pace.
It's also definitely possible to overdo it by throwing so many unfamiliar terms at the reader so fast that they get turned off. Not the case here, of course, but other books definitely do it.
</non-expert-opinion>
#Writing #OpeningLines