When a number becomes the target, people hit the number and miss the goal
The brain swaps a simple score for a complicated aim, then optimizes the score into ruin.
Curiosity Chronicle · The Cobra Effects of LifeIn business, targets tied to opening new accounts have often produced many fake openings, with real cases ending in large fraud lawsuits. Managers judged on staff turnover have added workers only to cut them to meet the quota.
That pattern shows how a useful gauge fails. A figure starts as a rough sign of something harder to judge, like honest sales or a well run team. Turn that figure into the prize, and effort shifts to moving the figure, even when that harms what mattered in the first place.
The name for this breakdown is Goodhart's law. It means that once a gauge is made the aim, it stops being a reliable gauge.
Scientists call the mental slip behind it surrogacy, which means a simple stand-in takes the place of the harder goal it was meant to track. A sleep score can feel like health itself. Sticking to a plan can feel like doing good work, and wealth can feel like a good life.
This is not about weak willpower. It reflects how minds naturally take shortcuts.
In everyday terms, that can mean a strong quarter at work paired with a missed family dinner, a missed school event, or a friendship left to fade. People hit the number and lose what the number was for. The fix is to keep the larger aim in view, and to treat the figure as a servant, not the master.
Questions people ask
Who was Goodhart and what was he originally measuring?
Charles Goodhart was a British economist who formulated the idea in 1975 about money supply and central banking. He argued that once the Bank of England targeted a particular monetary measure to control the economy, people changed their behavior and the measure broke down. Economists later generalized it far beyond money.
Does this happen in schools and hospitals too?
Yes, it happens there too. When schools are judged mainly on test scores, teaching can narrow to test prep and scores can rise without much extra learning. When hospitals are judged on wait times, attention can shift to moving the clock rather than improving care.
Why is a proxy so tempting?
Abstract goals like health, good management, or a good life are vague and slow to judge. A number is concrete, immediate, and rewarding, so attention drifts toward it. Once rewards, praise, or pay follow the number, the number starts to feel like the thing that matters.