[seanjh]

Haven't used Elm myself, but I assume this argument is based in large part on the strength of the Elm compiler error messages. For example: https://twitter.com/ID_AA_Carmack/status/735197548034412546

[Semiapies]

That's kind of amazing.

[IanCal]

Here are some more examples, though are generally more basic errors: http://elm-lang.org/blog/compilers-as-assistants

Overall, I really like the approach of making error messages an important feature. We see them so often that improving them makes the developer experience much better, but I can imagine they're a less 'sexy' task to work on and probably much harder to get right than you'd expect.