The Curious Incident of the Dog in the Night-Time

When I first started to read this book I was utterly suprised by Christopher's rationality and his intellectual thinking. He knows every prime number up to 7,057 and every country of the world and it's capital. He also used many mathematical equations in his math class that I am unaware of, which amazed me. Christopher liked to be exact with time, his observations, and in everday life. Without numbers life wouldnt be interesting for him, nor would he be able to understand it.