Developer Productivity
The fastest engineers aren't the smartest — they're the ones with the sharpest tools. This section covers the meta-skills that compound over a career: Android Studio mastery, debugging shortcuts, ADB tricks, and the methodology behind feature experimentation.
Android Studio Mastery
Power-user shortcuts, custom inspections, debugging, profilers, ADB tricks, plugin ecosystem.
A/B Testing & Experimentation
Hypotheses, power analysis, statistical significance, sample size, ramping, multi-variant tests.
Why these matter
Speed compounds. A senior engineer who debugs in 5 minutes what a junior takes 30 minutes for ships 6× more features. Multiply by 200 working days a year — vast difference in output.
A/B testing turns feature decisions from opinions into evidence. "Does the new checkout flow improve conversion?" stops being a 1-hour meeting and becomes a 2-week experiment with a definitive answer.
Chapters
- Android Studio Mastery — shortcuts, debugging, profilers, ADB, plugins
- A/B Testing & Experimentation — methodology, statistical rigor, multi-arm tests, segment design