Chapter 2 — Counting as Target Capture
Numbers compress reality. But what is compressed becomes the target.
This is not a new observation. Charles Goodhart, advising the Bank of England in 1975, gave it its canonical form: "When a measure becomes a target, it ceases to be a good measure." But Goodhart's Law is usually treated as a curiosity — a footnote about perverse incentives in monetary policy. It is far more fundamental than that.
A hospital measures patient wait times. Wait times become a target. Staff reclassify patients to game the metric. The measurement improves. The care does not, and may worsen — because attention has shifted from the multi-dimensional reality of patient health to the single-dimensional reality of a number on a dashboard.
A school measures exam results. Results become a target. Teaching narrows to the test. Children learn to pass exams. They do not learn to think. The metric rises. The thing the metric was supposed to represent — education — quietly degrades.
A company measures quarterly earnings. Earnings become a target. Long-term R&D is cut. Maintenance is deferred. Workforce is casualised. The number goes up. The company hollows out. Sometimes for decades before anyone notices.
KPI reductionism is not a management flaw. It is a structural consequence of symbolic compression. The moment you represent a complex system with a single number, the system begins to deform around that number. Not because people are corrupt, but because optimisation follows the objective function it is given. Give it one variable, and it will optimise that variable — at the expense of everything it cannot see.
The problem is not measurement.
The problem is mistaking the map for the terrain.