The Curious Incident of the Dog in the Night-Time 3

I've noticed that Christopher likes isolation, and doesn't like to communicate or interact with people if he doesn't have to. In the book, when Christopher is talking about why he wants to be an astronaut, he explains that he would want to have a spaceship all to himself, or at least "have [his] own part of the spacecraft which no one else could come into," [pg. 51].  He also says he'd love to look through a window on the spaceship and know that there was no one else near him for thousands of miles. Isolation seems to calm Christopher down, and he isolates himself often in the story, in the shelves of the train, for example. This is because Christopher likes to carefully analyze everything around him, and that could get hectic in overcrowded places, which could cause Christopher to get upset. So, to eliminate that possibility -or if it's already happened, to calm down afterwards- Christopher finds a place where there is no one and nothing to think about or analyze, and feels better. I thought this was an interesting trait and it added more to the plot because it showed how difficult it can get if you have an issue such as Christopher's.