Goodhart's Law: when a measure becomes a target, it cease to be a good measure. - Sketchplanations

In other words, if you pick a measure to assess people’s performance, then we find a way to game it. I like the illustration of a nail factory that sets number of nails produced as their measure of productivity and the workers figure out they can get tons of tiny nails. And, if they switch it to the weight of nails made, they get a few giant heavy nails. Or perhaps the story of measuring fitness by steps from a pedometer only to find they get put on the dog. Some strategies for helping this are to try and find better, harder to game measures, assess with multiple measures, or to allow a little discretion. More detail in this nice little article. I also liked an idea I read in Measure What Matters of pairing a quantity measure with a quality measure, for example, assessing both number of nails and customer satisfaction of the nails.

Goodhart's law and gamification of metrics, by Trev de Vroome

Measuring developer productivity? A response to McKinsey, Part 2

Goodhart's Law – Reflect

Measuring developer productivity? A response to McKinsey, Part 2

Measuring developer productivity? A response to McKinsey, Part 2

Have you heard of Goodhart's Law? 👀 “When a measure becomes a target, it ceases to become a good measure.” When companies establish goals based on metrics, they can get into a

Goodhart's Law for Data Science and what happens when a measure becomes a target? - KDnuggets

Dollo's law - Deepstash

Code Coverage Complications

How To Measure What Matters, Not What Is Measurable, by Jude King, PhD, The Startup

The tragedy of the Baby Friendly Hospital Initiative can be explained by Goodhart's Law

The tragedy of the Baby Friendly Hospital Initiative can be explained by Goodhart's Law