Dean Karlan has a Substack

Dean Karlan launched a Substack newsletter, starting with an updated guide on which World Cup team to root for based on global happiness, using AI to reduce costs and enable real-time updates. He argues that for now, readers should root for the Democratic Republic of the Congo.

Dean Karlan has a Substack He starts his new essay https://substack.com/home/post/p-202778147 with this: In 2014 I wrote in The New York Times that if your own team is not in the World Cup, you should root for the one whose victory would do the most good. Add up the happiness a title would create, more where more people care, more where incomes are lower, and more where a win would be a first rather than a habit, and root for the country on top. That year it was Nigeria. With 48 teams in 2026, and more of the world’s poorer and first-time sides in the field, I rebuilt the guide, with more nuance and, thanks to AI, at a fraction of the old cost. It updates itself as the games are played. At least for now, you should root for the DRC he argues.