Business Brief: The economist who seeks the signal in the noise

Good morning. In a world spinning through crisis after crisis, Baroness Dambisa Moyo has a rare perspective. The bestselling author sits in the British House of Lords, serves on boards of global giants such as Chevron, Condé Nast and the National Geographic Society, and has built a career studying what happens when big systems come under pressure. Her message? Don't panic. Our full conversation is below. In the news Retail: 7-Eleven's parent company says Couche-Tard is understating the antitrust risks of a potential merger. Finance: Alternative banking pioneer Som Seif's Purpose is acquiring Steadyhand, adding $1.3-billion in assets. Media: Blue…