In mid-May of 2010, I walked into building 44 on the Google campus for my first day on the Android team. Not far from my desk were at least a half-dozen machines for brewing a wide variety of great, strong coffee. I was surprised at the focus on caffeine, but not for long.

The team was finishing up one release1 while starting work on the next one2 in parallel. Both were difficult, time-consuming, and critical as we tried to make Android relevant in the crowded smartphone market at that time. There was a constant feeling of racing furiously toward a goal, doing whatever we could to reach it and not knowing if we would. The pace was ...

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