• Three factors that effect work efficiency

1、the familiar degree of swift language, including use it and debug it; 2. the business of product; 3. communication with team members, i.e mobile engineers, backend engineer, tester, product manager, designer;

• Based on tester driving, amazing concept. I need to feel more about this.

• Feelings

As an engineer, begin with major and evaluable tasks, so taking your time to schedule them first, and then developing. The misunderstanding picture in my mind that I should clean all trivial tasks at the beginning of developing, and then I can focus on majorities. In real context, blockers always along the way, and ignoring them or producing new questions maybe more suitable.