> So explain that to me.
You're special. Congratulations! You have a unique capability to absorb knowledge. In my experience, this means one of two things: either (1) you truly are brilliant and will exceed at anything you apply to, or (2) at some point you will run into something that you _don't_ understand after the first or second try, and you'll be entirely unequipped and unprepared to deal with that. Also in my experience, (2) is far more common than (1).
Bashing your head against difficult things in a low-stakes environment where folks are literally paid to help you navigate failure is a great way to extend the runway until (2) hits. Again - you're _paying_ for this opportunity in college.
> ... then the professor would do some last saving grace move where you do some BS work to get an extra five percent.
Maybe it's not BS work? Maybe there's something to creating relationships with the people you work with, and creating alternative avenues for them to help you, since it's literally their job?
I had an undergrad once who did reasonable on their homework problem sets, but just could not get it together in the written exams. Turns out their was an anxiety issue involved. But they came to my office hours for help, and put in the effort, so I was more than happy to see what I could do to ensure that not only would they learn the material to the best of their ability, but that we could soften the blow of a less-than-perfect final mark in the course. I wouldn't go to such lengths for a name on a paper who I saw in lecture but otherwise had no interaction with... how do I know they actually put in the effort and knew the material?
> Someone who understands the material would ace the exams. In my experience most people did not ace the exams and in fact would hate on me and some others who would “kill the curve”.
Depends entirely on the exam. I've taken exams for coursework that I truly thought I had mastery over and utterly bombed them. I've also taken exams for courses that I was convinced I was going to fail, and done well, too.
In my experience, it's actually very difficult to write an in-person exam that rewards mastery over course material. I've encountered very few such exams in my life that didn't resort to gimmicks or "gotchas" in the material. It's much easier in a timed, in-person setting to write busy work that has tricks built in so things simplify away and get rid of a lot of the manual work.