I think that's what Rose was trying to get to happen earlier. I don't know about you, but everything we learned there didn't exactly stick with me when Lucifer attacked the city. It wasn't all that fresh in my mind and on pain killers. It would be good to have a steady course of refreshers on it because it is a lot of information. The weapons and self-defense part I don't have a problem with, but knowing all the different ways to kill different types of creatures here can be chaotic.