Christopher likes for things to be in a very particular order. He doesn't mind the lady who lives next door moving in after his mom dies, just as long as she keeps the jars in the kitchen ordered according to size. He's also very logical about the world, but at the expense of civility and sentiment. (He tells a priest there's no such thing as God because nothing can exist outside of the universe, for one.) These two factors – order and logic –unite in the realm of mathematics, where Christopher is happiest. Bottom line: The Curious Incident of the Dog in the Night-Time reminds us life is pretty chaotic (and that's so not okay with Christopher).