Yeah, the thing is, "a monad is a monoid in the category of endofunctors" is kind of a meme among non-Haskell developers. Personally, I think Haskell is a very interesting language. The mathematical jargon, however, is impenetrable, and this particular expression is kind of the poster child. I'mma go look at Erlang if I want my functional language fix without making my head hurt, thank ye very much.