This is definitely true. I remember walking in to a computer architecture course, felt prepared, and then the teacher said it was an open book final right befor

This is definitely true. I remember walking in to a computer architecture course, felt prepared, and then the teacher said it was an open book final right before handing it out. He had a stack of books for those who hadn't brought theirs as well. Needless to say, one of the scarier tests I've taken and while half the class seemed to sigh with relief, my stress level jumped...and rightly so. Open book or take home exams done right are downright scary.