Yeah if you're an ML model trying to get the high score on the test set why would you explore the deeper features of the data when you can just overfit and get

Yeah if you're an ML model trying to get the high score on the test set why would you explore the deeper features of the data when you can just overfit and get 100%? At least in my experience, my professors didn't make the old material available to other students, and neither did the fraternities/sororities.