I've read this how many times, but it's always been juuust long enough that I forget exactly where things are going and get fully caught up in the back and forth. What a slam dunk of an incredibly ambitious novel. Moriarty asks the reader to invest their attention in a whole bundle of deep topics, but she pays back that trust with a strong, intense story which uses all the pieces she's set out on the board. Truly a novel for autists first. Some authors make infodumping about their pet topics into tedious recitation, but you can feel Moriarty's curiosity shining through her characters. An excellent piece I'll certainly be coming back to just as soon as I forget exactly what the twist at the end is.