In The Village, when Ivy is standing at the door waiting for Lucius to come back and her sister is asking her to come inside, the camera pans from her sister waiting in the basement trap door to a chair right in front of her and to the right. It moves (from what it seems) all by itself. No one explains why and/or how in the movie or anywhere online. From what I understand no one else has even questioned it!
Why does the chair move by itself?