I don't understand Moon Logic.
I like doors on bookshelves. I'd have them on my bookshelves at home, except it's an expense I can't justify. Cats chew on book corners, you know. And children have grubby hands. And any number of other things -- it's a mark of protection.
Is the Moon Logic that if there's a door on the bookshelf, you can't get at the books? Is the article writer two-years-old or lacking thumbs?