A Cambridge economist wants to overturn GDP that has governed the world for 80 years

The problem, in one sentence

What exactly does GDP measure: output or human welfare? Diane Coyle (黛安娜·科伊尔), a Cambridge University economist, argues in her new book The Measure of Progress that the post‑war GDP framework — the metric that has guided economic policy and international comparisons for roughly 80 years — is increasingly misleading. It has been reported that Coyle believes incremental fixes are no longer sufficient; she calls for a fundamental rethink of how national accounts treat unpaid work, free digital services, government outputs and intangible capital.

Why GDP is breaking down

GDP was built in a different era. Its creator, Simon Kuznets, originally envisaged a welfare‑oriented measure but wartime governments wanted a count of producible output and capacity instead, so government spending and defense were folded in. That decision helped make GDP politically useful — and politically dominant — but left conceptual gaps. Coyle highlights several: unpaid household labour often escapes valuation while imputed rent for owner‑occupied housing is counted; free internet services and user‑generated content create real value without market prices; and much modern production is “intangible” — brands, software, design, after‑sales services — that official statistics struggle to classify or capitalise. It has been reported that, after revising earlier methods, she finds “hard‑to‑measure” sectors now account for more than 80% of modern economies, which helps explain why real (price‑adjusted) GDP can be more hypothetical than “real.”

What comes next — measurement, politics, geopolitics

If GDP misses unpaid work, environmental loss or the consumer surplus from free platforms, what should replace or supplement it? Coyle and others point to satellite accounts, new wellbeing indices, stronger valuation of natural capital, and fresh rules for intangible investment. These are technical choices with political consequences: GDP numbers shape fiscal policy, trade negotiations and even sanctions and development aid priorities, so changing them is not just a statistical exercise but a redistribution of attention and resources. Reformers ask not only how to count better, but whose interests the new counts will serve. In a globally interconnected economy — where digital trade, cross‑border IP flows and outsourced manufacturing blur “domestic” production — the stakes are high and the debate is likely to become geopolitical as well as technical.