> one by one I put each book back 20 minutes before it closed

If your library is like mine, it makes more sense to put it on a "to be shelved" cart, because they often track circulation even by the ones that didn't get checked out.

I've been going the library most weekends, and one thing I love about it is the random discovery of things that isn't driven by a personally-customized algorithm.

(I suppose I just contradicted myself a little bit. They'll keep the books that statistics show people are interested in, although I assume that is not the only criterion. But it's still not customized to me specifically.)

> I don't wanna read about [...] Marcus Aurelius!

One of the books I ran across and checked out was a graphic novel (book length comic book) about Marcus Aurelius.