This question is about "The Curious incident of the dog in the nighttime."
Answer:
He presents himself that way because he is autistic.
Explanation:
Christopher is bullish and for that reason, we can conclude that his mind does not work like the mind of people who do not have this mental disorder. Like some bulls, Christopher has a very good memory and usually recalls very detailed things from elements to which he has a certain fascination. This fascination makes him present himself along with the things that are important to him, such as knowing the names of all countries and their capitals, as well as knowing all prime numbers up to 7.057.
Yes I think he actually sleeps there because throughout the whole poem he talks about how he loves this girl an how beautiful she is. Also by the other Edgar Allen Poe poems and stories I've read by him he seems to talk about death and is very literal about it.