It's prudent to be prepared for important exams.
Kelly is feeling nervous about an upcoming physics exam that she doesn't expect to do well on.
Kelly wants to stop feeling anxious about the exam.
Kelly organizes a group study session with her classes.
Kelly decides to skip studying and convinces her classmates to go out drinking to relax instead.
Kelly's classmates do better than they expected because of the group study session.
Kelly's classmates end up doing poorly on the exam because they skipped studying.