Whenever there is fear, you will get wrong figures.
Fear invites wrong figures. Bearers of bad news fare badly. To keep his job, anyone may present to his boss only good news.
management by numerical goal is an attempt to manage without knowledge of what to do, and in fact is usually management by fear.
The merit rating nourishes short-term performance, annihilates long-term planning, builds fear, demolishes teamwork, [and] nourishes rivalry and politics. It leaves people bitter, crushed, bruised, battered, desolate, despondent, dejected, feeling inferior, some even depressed, unfit for work for weeks after receipt of rating, unable to comprehend why they are inferior. It is unfair, as it ascribes to the people in a group differences that may be caused totally by the system that they work in.