Pretty cool!<p>I've spent a lot of time wrapping my head around monads; whenever I thought I "got it," I would come across some exotic monad that completely blew my mind. The best way to understand them is not to rely on analogies but just follow the rules—everybody says that, but it took me a while to truly realize it.<p>See, for example, the Tardis monad or the Cont monad: <a href="https://www.reddit.com/r/haskell/comments/446d13/exotic_monads/" rel="nofollow">https://www.reddit.com/r/haskell/comments/446d13/exotic_mona...</a>