You know, I like to think that at least part of it is still him protecting the Doctor's secrets. However, I do think that he could find a way to do that while telling them the majority of what they should know.

Does the Doctor's existence need to be kept a secret really? I mean, VotD kinda blew that one apart. :D

Yeah. Pfft. Even Rusty was unsure about that one. Like professor and others have said, Jack was just being evil and having them on.

Oh, I think I read that wrong above. So the theory is Jack was just messing with him?