That is only the case if they make the entire system transparent.
That's true to a point, except that most people recognize pretty quickly, a pattern of reaction among the choices given to you in any dialogue tree. Though in general I'm in favor of keeping this hidden from the player. That was part of what I liked about the Hawke comment.
Having interactions recognized by every member of the part is a good way to punish the sociopath behavior endemic to RPG rep maxers.
