Man is not a rational animal; he is a rationalizing animal.
In books and movies, it’s rare to know the entire history of a character before the actual plot begins. In fact, in many books and movies, the only backstory you ever get occurs in flashbacks, after you’re familiar with the character on a more pedestrian level.
The DayTrippers campaign is fine with that. It’s all well and good to expect the Players to create the important aspects of their own characters’ pasts, but it’s entirely another thing to put them on the spot, forcing them to marry themselves to a character concept they haven’t even spent any time playing yet.[continued]