In Denmark, many libraries are open far into the evening/night (my local one is open until 22) and get this - they are unstaffed during those hours. You open the door with your loaning card.
Imagine a world where everyone is so familiar with the Dewey Decimal system that fitting in to a library could be as easy as fitting as a bagger at a grocery store. That library science was as commonplace as knowing how to make a gin and tonic. Wait staff now pivots to late-night librarian. 😁
I'm guessing there's people out there who hear Dewey Decimal and get hit with childhood trauma. But yeah, navigating a library should intuitive and effortless.