"Skill, inclination, personality--other stuff. Short version is Dad isn't one because trauma. He's--actually really good when it's an emergency, his mind goes sort of cold and clear, and he can do some damn impressive stuff when he's like that--Mom doesn't even have a scar, and she got shot in the lower spine once. Which...was kind of a good thing, actually, because when sorcerers and artifact users associate a particular state of mind with a magical action too much, the magic can start feeding back in on it and creating a loop. The clear cold thing sort of kicked him out of the one he was in. ...I didn't think it was relevant because it's really, really rare, and frankly you're...pretty much the opposite of the kind of person it happens to. Your notebook thing, specifically," she clarifies. "It's the kind of thing that happens when you don't pay attention to your emotions even as much as normal people do, most of the time."