Reading #3 Leary

First off I really enjoyed this section as it touched on different aspects of the human life and truly exemplified the human connection. I would like to ask however if there is any specific evidence that Oskar does in fact have aspergers or is he just a socially awkward kid that went through a very rough experience losing his father. He is a brilliant kid, I would say borderline genius in some aspects of his life and his imagination in incredible. I know that we were told that he does in fact have aspergers or some mental disorder but if I was not told I most likely would not have picked up on it. I really enjoyed meeting Mr. Black (the 103 year old one) his character really added a new refreshing human connection to the story. Does this Black have any other reason to be in the book other than to add an interesting twist? Also I know this was earlier in the reading, but what was the significance of the letter written to Oskar's grandmother from the man in the concentration camp? Foer seemed to not really tie up that significance; but maybe it comes up later in the story, I don't know.