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hktitan/duolingo

v2.0.0MIT

The Duolingo playbook as agent skills — retention, streaks, gamification, learning science, curriculum, efficacy measurement, metrics, experimentation, growth, brand, voice, culture, hiring, platform and mobile engineering, observability, and LLM feature design. Distilled from 750 posts on blog.duolingo.com plus the Duolingo Handbook and Design System. Start at the /duolingo router; design and UI craft routes out to design-engineering.

duo-motivation-segmentation

Ask users why they are here, store that declared motive as a first-class dimension next to behaviour, and learn where self-report and telemetry each lie to you. Covers collecting a stated reason at signup, why the biggest segment is usually not the most engaged one, why two cohorts with identical usage curves need opposite interventions, when to exclude a segment instead of pooling it, reading the size of your catch-all bucket as a taxonomy failure, naming and interviewing a motive you never designed for, why cohort splits invert aggregate rankings, and how the motive mix shifts during a shock. Use when you are asking why did this metric move, who is this feature actually for, why does this segment churn, should I add an onboarding question, is my persona real, what does "other" mean in this chart, or why did a surge not stick.

Version
2.0.0
License
MIT
Read SKILL.md at the source

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