I think Elm gets error message UX wrong. They claim to have such "friendly" error messages, but heck there's plenty of times I've seen where it was just utterly wrong about the real reason the error happened, so making it seem all "friendly" seemed to me to just be increasing the misdirection. Also, they are kind of overly verbose for my taste. All in all not as wonderful as all the blog posts had let me to envision in my mind's eye. It is to sigh.