Because undergraduates focus on becoming better on programming. While thier professors focus on making you learn programming fundamentals.
The motivation is different. Professors job is to make you understand complex stuff easily. So that you are capable of building far more complex stuff using the knowledge imparted in you. I always thought I am better than professor, but then realized he just wants me to enjoy the subject and he’s not focused on getting a job at Tech giants.
Originally Written on Quora.