Most leaders are asking the same question about AI: Will it make their teams more productive—or slowly erode the very skills they’re trying to build? In this special episode, as part of the recent HBR Leadership Summit 2026, University of Pennsylvania’s Angela Duckworth says her long-standing research on grit—and the fact the most successful people aren’t simply persistent, they stay committed to long-term goals while adapting their tactics as the world changes—is more relevant than ever in the age of generative AI. Rather than replacing human capability, she explains, AI can become a powerful coach that accelerates learning, if people treat it as something to learn from, not simply something that does the work for them. Duckworth’s new book is Situated: Find the People and Places That Bring Out Your Best.