[_verandaguy]

Believe it or not, the library predates the understanding of monads as a mathematical concept! Though it can be argued it is an example of a functor (the library is mapped over two countries).

[Evidlo]

A library is just a manuscript depository in the category of lending institutions.

[skipants]

> Though it can be argued it is an example of a functor (the library is mapped over two countries).

Now that's a special kind of joke I can only find on HackerNews