The novel is narrated in the first-person perspective by Christopher John Francis Boone, a 15-year-old boy who describes himself as "a mathematician with some behavioural difficulties" living in Swindon, Wiltshire. Although Christopher's condition is not stated, the book's blurb refers to Asperger syndrome, high-functioning autism, or savant syndrome. In July 2009, Haddon wrote on his blog that ""Curious Incident" is not a book about Asperger's... if anything it's a novel about difference, about being an outsider, about seeing the world in a surprising and revealing way. The book is not specifically about any specific disorder," and that he, Haddon, is not an expert on autism spectrum disorder or Asperger syndrome.