In my experience, if it isn't measured, then it is assumed that the policy (whatever it is) is working. If you don't measure, you can't be surprised by "wow, i

In my experience, if it isn't measured, then it is assumed that the policy (whatever it is) is working. If you don't measure, you can't be surprised by "wow, it didn't work like we thought". Therefore, mistakes don't get recognized or corrected. There are many tools, but measurement is one of the only ones that brings unexpected bad news to the user, and that is invaluable.