Luis Von Ahn discusses the inequality in education due to financial disparities and explains how he created Duolingo to provide equal access to education using psychological techniques from social media to make learning addictive.

The chapter discusses the speaker's personal journey from Guatemala to the US, highlighting the inequality in education based on wealth and the decision to work towards equal access to education for all. The focus on teaching foreign languages as a starting point for this endeavor is also emphasized.

The chapter discusses the reasons for focusing on teaching foreign languages, emphasizing the potential income increase associated with learning English. It also highlights the decision to use a mobile phone for accessibility and the freemium model used by Duolingo for revenue.

Duolingo has successfully utilized psychological techniques, such as streaks and notifications, to engage users in learning. By applying the same methods used in popular apps like Instagram and TikTok, Duolingo has made education appealing and addictive, resulting in millions of daily active users.

Engaging Users with Passive Aggressive Notifications and Gamification