I think I've encountered a couple of times where I've gotten obscure errors, and I agree that error messaging needs to be improved. On the other hand, every ti

I think I've encountered a couple of times where I've gotten obscure errors, and I agree that error messaging needs to be improved. On the other hand, every time it's pointed out an error, it was right. And IMHO union type-checking alone puts it above most popular static-typed languages out there. The other problem with specs is that they can become out of sync with function signatures.