Chapter 3 Summary

The narrator introduces himself as Christopher John Francis Boone, who boldly states that he knows all of the countries in the world, all of their capital cities and every prime number up to 7,057. Christopher first meets Siobhan some eight years earlier, and when he first meets her, she shows him some “smiley face” pictures depicting a broad range of human emotions. Christopher has a pretty good understanding of the basic happy and sad faces, but he can’t figure out the other faces, which express subtler emotions. He says this is because people’s faces change too rapidly. To solve the problem, he carries the diagrams of the faces around with him and tries to compare the diagrams of the faces with the actual expressions of the people he is talking to as they are conversing. Siobhan thinks this might be confusing to...