It's fantasy. Of course it's unrealistic. That's kind of the point. It's also a children's book series. It isn't supposed to be realistic. It's fine to not enjoy unrealistic/fantasy stuff, but there are people like me who love that sort of stuff, for the exact same reasons others hate it.
(Ain't it amazing how different people can be?)
Anyhoo, I've invented a fun way to study for vocabulary reviews. At least I think it's fun--- I love coming up with sentences for words. Here's my favorite one I came up with:
The pure look of wicked glee in his brother's double's eye was enough to
discomfit Quinn.
And I should go to bed now because I now feel sufficiently studied for this test!