Economics sometimes feels like physics–so sturdy, so objective, and so immutable. Yet, behind every clean number or eye-popping graph, there is usually a rather messy story, a story shaped by values, interests, ideologies, and petty bureaucratic politics. In our new mini-series, the Use and Abuse of Economic Expertise, we tell the hidden stories of the economic ideas that shape our world. For future episodes of our series, and a full list of credits, visit our series page.

On episode one, we begin at the beginning: the invention of the modern economy, or at least the idea of the economy. It starts with one measure: the GDP, or gross domestic product. It’s a measure that comes to define what we mean by ‘the economy.’ Before GDP, we did not really speak in those terms. Cited producer Alec Opperman talks to sociologist Dan Hirshman, who brings the story of the man who pioneered the GDP, Simon Kuznets. Yet, the GDP was not the measure the Kuznets hoped it would be. It’s a story that reveals the surprisingly contentious politics of counting things up.

Plus, what about alternatives to GDP? The Genuine Progress Indicator, the Human Development Index, the Green GDP, and so on. These measures are said to be more progressive, as they often capture things we value (like, care work for instance), and subtracting out things we could use less off (like, environmental degradation). Scholars and policy wonks have been raging about these types of measures for decades, but they have not taken off. Why? Economic historian Dirk Philipsen, author of the Little Big Number: How GDP Came to Rule the World and What to Do About It, talks to Alec about why a good number alone is never enough to change the world.