Goodhart's Law

Lots of reasonable metrics become bad once you make them a target.

Another case of "Once you turn a metric into a goal, it ceases being a good metric".

Probably Goodhart's law: when a measure becomes a target, it ceases to be a good measure.To my mind, it means that the metric becoming the main focus, it makes easy to forget the original relevant goal and even works against it. That is not the case here.https://en.m.wikipedia.org/wiki/Goodhart's_law

Don't reward raw metrics. Goodhart's law is too real in this context.

"When your metric becomes a target it ceases to be a metric".

"A metric that becomes a target ceases to be a good metric." ;)

A metric stops being a good metric once it becomes a target, they say.

Doesn't work. "When a measure becomes a target, it ceases to be a good measure."You can totally build something that is a decent metric, but as soon as you create incentives to "game it" (optimize for the metric not the actual goal you're trying to measure), it will be gamed, and creating metrics that are resistant to that is nearly impossible in most cases.

related: Goodhart's lawGoodhart's law is an adage often stated as, "When a measure becomes a target, it ceases to be a good measure".Like other posters have said, metrics are useful and convenient, but they are NOT the focus of the business. The business defines goals, defines measures to help support the goals, and re-evaluates as needed.https://en.wikipedia.org

I don't understand your point. It's not the measurement itself that is the failure. It's making that measurement a goal that's the problem. The real metric that matters for any company is profit. Anything else is just an arbitrary measurement that is believed to help achieve that goal. The metric of profit is also gamed which is why a lot of people and companies do shady things.