As a field service engineer, I would spend 2-4 hours on a new problem and the next time I’ll encounter it I will solve it instantly. I identified several commo

As a field service engineer, I would spend 2-4 hours on a new problem and the next time I’ll encounter it I will solve it instantly. I identified several common errors made by other people. They were very confusing the first time, but now I can solve them at a glance.