10.12 came after 10.11. Nobody having to deal with this sort of thing is confused. Using a Mac, it is easier to get the version number than the code name. This

10.12 came after 10.11. Nobody having to deal with this sort of thing is confused. Using a Mac, it is easier to get the version number than the code name. This argument is most of the time, if not always, used by people with no interest in trying to understand how it works.