“Programs are meant to be read by humans and only incidentally for computers to execute.” -- D. Knuth

I believe that the ones who create error messages like "Invalid value" (without telling you the value nor why it was invalid) or "File not found" (without telling you the attempted file path) are not really good programmers.

Concise != stripped from essential information.

And I'm saying that as someone who always valued concise style of writing, and often got an equivalent of D (or sometimes F) in Polish writing assignments for my essays being too short. :D