So... the pros and cons of having to bring your laptop to class.
Pro: You can stay easily occupied. If you start drifting off, there is always the trusty interweb to keep you occupied.
Con: When you choose a humorous website to fill your empty time, and you randomly bust out a giant snort of laughter, right at the moment when the class is all quiet and supposed to be thinking of some very important, serious concept.
Just saying, hypothetically these could be some dangers of laptops. Not that they happened to me. Just barely. And repeatedly. Yeah. Not that.