Remember, Jaime isn't just trying to kill Bran because he's an annoying little kid. Bran has seen something that is basically a death sentence for Jaime, for Cersei, and their children – their three actual children. So I've asked people who do have children, "Well, what would you do in Jaime's situation?" They say, "Well, I'm not a bad guy – I wouldn't kill." Are you sure? Never? If Bran tells King Robert he's going to kill you and your sister-lover, and your three children. . . .
Then many of them hesitate. Probably more people than not would say, "Yeah, I would kill someone else's child to save my own child, even if that other child was innocent." These are the difficult decisions people make, and they're worth examining.