I like the thought. I heard about a professor who, on the very first day of class, told his students that in every lecture, there would be one lie. It might even be regarding information on the tests.

It was the job of the class to figure out what the lie was and call him on it and the end of class. This kept the students attentive and on edge.

From what I remember, there were some sessions where the students could not figure out what the lie was, so they went home with a potential error in their notes.

The trick was, the professor was also lying when he said that there would be a lie in each session.

In the end, knowing that there might be a blatant lie in each lecture kept the students paying attention and ultimately getting more out of the class. Doing something like this with books (not even computer books, necessarily) might really help people to pay attention. I'd think something like this would sell well too, just because of the marketing angle it would have.

If anyone knows where the story of the professor came from, please let me know. It was a great story.