[ufo]

I think one of the reasons for the meme is because there's so many monad tutorials. When a Haskeller is introduced to monads they'll run across all these monad tutorials with abstruse analogies for what a monad is. Is a monad a burrito? Or a space suit? Odds are that none of these analogies will make much sense and the programmer will have to figure out on their own, what is the deal with monads after all. At some point they might have an epiphany; monads are the sort of idea that is actually pretty neat when it "clicks". They will feel compelled to write a monad tutorial, and thus history repeats itself.