According to director Asghar Farhadi, the film was not accepted into one Japanese film festival, since the movie's depiction of Iran was quite different from the idea that most foreign (especially Western) people tend to have of this country.
When they decide to stay in the villa and start to clean it, Ahmad calls the boy (Omid) by name asking him about where he can find a vacuum cleaner. Seconds later, he asks the boy about his name.