Great example. Another is that you may have one "star" employee who consistently notices the thing that most needs doing despite incentives, like jumping on the

Great example. Another is that you may have one "star" employee who consistently notices the thing that most needs doing despite incentives, like jumping on the stock problem, and when review time comes around, they're the absolute worst employee on paper. So you fire them, and things get worse, and there's no obvious reason in the analytics as to what went wrong.