Goodhart's Law is sometimes expressed as "When a measure becomes a target, it ceases to be a good measure."

Question

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Goodhart's Law states that when a measure is used as a target, it can create unintended consequences that undermine the usefulness of the measure. For example, if a company sets a target for employees to make a certain number of sales calls per day, employees may start making meaningless calls just to meet the target, rather than focusing on quality and effectiveness. This can ultimately harm the company's overall sales performance, despite meeting the initial target.

Goodhart's Law Is Sometimes Expressed as "When a Measure Becomes