Hacker highlights the difficulties of raising smaller funds compared to larger sums, emphasizing the importance of choosing the right market for fundraising. Duolingo's transition to an AI-first approach has revolutionized content creation, reducing time from years to months. Internally, AI enhances productivity but still struggles with complex tasks. Despite advancements, Hacker believes a CS degree remains valuable in the short term. The discussion addresses societal impacts of AI, including potential shifts towards hobby-centric lifestyles. Duolingo continues to hire entry-level engineers and integrates AI into customer support while maintaining user engagement through gamification. Hacker reflects on Duolingo's biggest mistake—delaying certain initiatives—and underscores the significance of founder involvement in product design. He advises European founders to relocate to the US for better opportunities, citing differences in startup ecosystems. The conversation also touches on the pros and cons of going public, balancing predictability in financial markets with current technological unpredictability. Finally, Hacker shares insights on wealth, happiness, and the importance of purpose-driven entrepreneurship.