Here is the context.
We should really, really make sure if we are measuring something, that it is important.
As an organization grows and industrializes, it’s tempting to simplify things for the troops. Find a goal, make it a number and measure it until it gets better. In most organizations, the thing you measure is the thing that will improve.
Colleges decided that the SAT were a useful shortcut, a way to measure future performance in college. And nervous parents and competitive kids everywhere embraced the metric, and stick with it, even after seeing (again and again) that all the SAT measures is how well you do on the SAT. It’s easier to focus on one number than it is to focus on a life.