Air holes
Apparently, the hole that you see in this picture, with the man sticking his arm through is for air ventilation. Just who thought that putting a hole in the wall of a house for air was a good idea? Isn’t that the entire purpose of a window? Imagine seeing this person breaking in and staring at you.
His hat, glasses, and scarf are not the most menacing attire we could think of, but nonetheless, we do not want to see him wandering around the living room. Maybe the area where they built these homes has an extremely low crime rate, which would answer a lot of questions here.