The Old New Thing

If you measure something, people will change their behavior to address the measurement and not the thing the measurement is intended to measure

We all know that once you start measuring something, people will change the way they behave. We hope that the change is for the better, but that's not always the case, and that's especially true if you are using the metrics as a proxy for something else: People will manipulate the metric without necessarily affecting the thing that your ...