Another big change was renaming the Lord Ruler's priests. Originally, they were called just that–priests. And, the Steel Ministry was the Steel Priesthood. I made the change to Steel Ministry and obligators because I didn't want the religion and government in the Final Empire to feel so stereotypical. This was a world where the priests were more spies and bureaucrats than they were true priests–and I wanted the names to reflect that. So, I took out "Priesthood" and "priests." I really like the change–it gives things a more appropriate feel, making the reader uncertain where the line between priests and government ministers is.
By the way, my friend Nate Hatfield is the one who actually came up with the word "obligator." Thanks, Nate!
Anyway, I when I changed the priests to obligators, I realized I wanted them to have a more controlling function in the Final Empire. So, I gave them the power of witnessing, and added in the aspect of the world where only they can make things legal or factual. This idea expanded in the culture until it became part of society that a statement wasn't considered absolutely true until an obligator was called in to witness it. That's why, in this chapter, we see someone paying an obligator to witness something rather trivial.
This was one of the main chapters where obligators were added in, to show them witnessing–and keeping an eye on the nobility. Moshe wanted me to emphasize this, and I think he made a good call. It also gave me the opportunity to point out Vin's father, something I didn't manage to do until chapter forty or so in the original draft.