These musing miss the key failing of KPI, Goodhart's Law, "When a measure becomes a target, it ceases to be a good measure". There are multiple reasons why Goo

These musing miss the key failing of KPI, Goodhart's Law, "When a measure becomes a target, it ceases to be a good measure". There are multiple reasons why Goodhart's law tends to be true, but the most obvious one is as soon as people understand X is important, they do or inflate X. If they successful do X, it's often at the cost of other equally or more important but untracked activities, if they inflate it, it's obvious just as bad.