Well, it has happened only a few times, but I've seen students who are not really well versed in the course content or objectives. On the one hand, I don't want to chase them away with rude comments about not reading the syllabus...but on the other hand I don't want to encourage them to think they can negotiate course content. That just isn't possible in the courses I teach. I wonder if this is something that happens? I will admit it is rare...but it has occurred.
Jim