"Well, it's not legal on Arris as a whole, per se, but it is legal in this city, which is what matters, I suppose. Surprised? I thought you knew, actually. We did say you'd be working with people. They come from lawbreakers and those who are too poor to provide for themselves, or sometimes they are purchased from offworld slavers, though this is rare. Slaves here are generally treated fairly well, and the children of slaves can become citisens."