I feel I should point out that corrupt grading is easily detectable - one can often see it by looking at a corruptly graded paper,
Except who sees a paper except the grader and the student who wrote it?
Moreover, universities have a strong incentive to not be corrupt in their grading - if they let people slip through without learning the work, employers will start to notice and discount qualifications from that institution,
Empirically this incentive wasn't strong enough.
Except who sees a paper except the grader and the student who wrote it?
External examiners?
Another month, another rationality quotes thread. The rules are: