Goodhart’s Law

There is a sentence in the article that defines how valuable of a read this is:

"When a measure becomes a target, it ceases to be a good measure."

As we think about measurement, improvement, metrics, whatever, let's be careful that we don't substitute the result that we really want for interim metrics that just give us part of the story. Unfortunately Lee doesn't talk about the other side of the equation, which is, "How can we use these metrics to help us understand what is going on and to improve, without breaking the validity of the metric in the first place?"

I wish I had the answer to that, but unfortunately I have seen this very issue decimate the education sector.