New discoveries, inventions, and innovations — ideas — are at the heart of scientific progress and economic growth. But that means a growing economy depends on an accelerating production of new ideas. In this week's episode of "Political Economy," I'm joined by Didier Sornette to talk about where these ideas come from, why they've been in decline, and what we can do to foster greater scientific knowledge and a growing economy. Didier is Professor on the Chair of Entrepreneurial Risks in the Department of Management, Technology, and Economics at ETH Zurich. In 2020, he and Peter Cauwels authored "https://www.sciencedirect.com/science/article/pii/S0040162521007010 (Are ‘Flow of Ideas’ and ‘Research Productivity’ in secular decline?)"