I'm surprised there isn't a thread for this book already. I powered through it in a couple days since it was an easy and engaging read. I've got a theory that I wanted to share/discuss with other people as soon as I finished, but no one I knew had read it yet. Spoiler I think Joel is a legit Rithmatist. It's specifically stated that you have to believe your lines work for them to actually work. When Joel came out of the Church and he drew the line, he already "knew" it wasn't going to work.