This of course explains quite clearly why Haskell has taken over all large-scale software development in the decade since it was written. Personally, I prefer

This of course explains quite clearly why Haskell has taken over all large-scale software development in the decade since it was written. Personally, I prefer to just not be careless with side-effects. And maybe add some runtime invariant checks if I do have to write something that's too easy to misuse.