The fly in a way represents Karl’s guilty conscience in the face of death, and Simon is able to alleviate it somewhat through his small acts of kindness, if not through explicit forgiveness. In the face of mortality, Simon realizes, all people are equally helpless. He seems to feel some ambivalence about how instinctive his humane treatment of the German is. He treats Karl with kindness and respect without even thinking about it. Thus, despite all their efforts to dehumanize the Jews, Simon retains a deep sense of humanity.