I agree that bad metrics can be worse than none. I've certainly seen other examples in books on management. In this case, though, it sounds like they've put a

I agree that bad metrics can be worse than none. I've certainly seen other examples in books on management. In this case, though, it sounds like they've put a lot of effort into coming up with good metrics that are hard to game and, most importantly, are convincing to the surgeons themselves. The article talks about that at some length. (BTW thanks for plugging static code analysis -- I work in that field :-)