(1) Not just looking at a library function of a well known library but digging in to read the code and understand how they were architecting software. (2) When

(1) Not just looking at a library function of a well known library but digging in to read the code and understand how they were architecting software. (2) Whenever I ran into some kind of bug/anomaly I would refuse to hack my way around it. Sometimes I would soend days getting to the bottom of something. Usually I was making wrong assumptions and this has helped calibrate my intuition and gives me a better sense of what ought to be going on under the hood.