[akronim]

isn't this why you have closed book exams?

[pjscott]

Open-book, open-notes exams are harder to cheat on. There's no point to smuggling in notes when you can carry them in openly.

[nostrademons]

When I was in college, people would go to the "bathroom" during the middle of the exam, and then they'd actually wander outside, call their roommate, and have them read off the formulas needed from their textbooks. The invention of cell phones was a huge boon to cheaters.