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AI Summary
- Luis von Ahn built Duolingo into a $9B public company in a space everyone thought couldn't produce large exciting businesses by pioneering gamification and mobile-first language learning
- The company balances rigorous experimentation with gut instinct to create best-in-class customer experience, while von Ahn's own experience of transformative English language learning inspired the mission
- Duolingo's viral 'unhinged yet wholesome' green owl mascot became a trending cultural phenomenon, demonstrating how personality and experimentation drive user engagement in EdTech