When Christopher finds the bunches of letters that his mothe's been sending him, he realizes that his father had lied to him about his mother dying. Christopher feels betrayed that his father would lie to him, especially since Christopher hates lying.
When Mrs. Alexander offers Christopher a snack,Christopher makes sure that the food she was referring to was in "order". "is it a long cake with a square cross section which is divided into equally sized, alternately colored squares?" (haddon, 41) Christopher finds "order" safe and logical, that's the reason as to why he finds comfort in it.
Logic vs. Emotion
Though Mrs. Alexander shows nothing but kindness towards Christopher, he still finds her untrust worthy and feels unsafe. When Mrs. Alexander leaves to bring Christopher a snack, Christopher leaves her house in fear that she may call the police on him.
Although Christophers father lied to his son about his mothers death, he truly does care for Christopher. When Christopher throws up all over himself, his father runs him a hot bath to clean him up. This is just one example of how his father cares for his son, not to mention that he has been the one to take care of Christopher for as long as Christopher has been alive.
When Christopher is detained for hitting a police officer, he manages to feel calm. This is due to the fact that Christopher finds peace in "order". Rather than getting more upset, he finds that getting arrested made enough sense to be calm and collected.
Because of Christophers aspbergers, he isnt able to recgonize emotions as clearly as other people would. This lack of communication causes him to get into trouble since he isnt able to process how people are feeling. "...if you close your mouth and breathe out loudly through your nose, it can mean that you are relaxed, or that you are bored, or that you are angry, and it all depends on how much air comes out your nose and how fast and what shape your mouth is when you do it..." (15, haddon)