This week, Nobel laureate Paul Krugman discusses tariff “chaos”, how immigration policies limit productivity and New York City under a potential Mamdani administration. And, from airlines to apps, prices now change in real time, but who are the real winners in a dynamic pricing world? Plus, China dominates rare earths, but Brazil is willing to play the long game to establish a non-China supply chain for the magnets that power our technology. (Source: Bloomberg)