The document proposes adding "Delights" to Duolingo's language learning platform to provide mini culture-related tasks throughout a user's learning tree and achieve a more immersive experience. Delights would include categories like food, music and video to expose users to different aspects of a language's culture. The proposal outlines plans for delight creation, testing, and integration into Duolingo to engage users and motivate continued learning while staying aligned with the company's mission of free education for all.