This single ultimate stress point leads to self-destructive behavior and nonsense, like cramming. You can't wedge an entire course into your head overnight. There's a reason you don't see neurosurgeons hunkered down outside the operating theater flipping through their textbooks. And their entire job is opening up someone's skull and just stuffing things in there. If anyone knew how to cram, it would be them. But when they get something wrong it means someone else is stupider.
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"Oh man, I knew this bit before coming in here."
Worse, this all-consuming examgularity creates a bullshit binary expectation for life: either everything is fine, or there's a problem and all possible efforts must be bent only to its solution. Real life doesn't work like that. Real life is made of ongoing problems, and if one unresolved issue stops you from relaxing, you might as well get started on your heart attack now.