The video discusses the importance of education and the inequality it can create. The speaker shares their journey to providing equal access to education through Duolingo, a language learning app. They explain the choice of teaching languages due to its wide audience and income potential. Duolingo's freemium model allows free access while generating revenue from ads. Engagement techniques like streaks and notifications are used to keep users motivated. The speaker hopes to apply these methods to other subjects, aiming for a future where mobile education is accessible to all.

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