In my case it was that I was doing something very wrong in undergrad. But somehow the fact that I didn't do a damn thing but alcohol and drugs and cram one week before finals didn't stop me from getting good grades and graduating. Somehow the lack of all that knowledge that I was supposed to learn didn't didn't disadvantage me at all. Somehow just holding the stupid credential that was the only thing I got out of it is the only thing anyone cares about.