The way that people are raised, the experiences that we have, and the different places we come from affect the way in which we interpret films, books and art. Although the artist, author or director may have a particular way that they want something to be interpreted they cannot make 100% sure that this will be the case.  If they could do so it would almost serve the same roll as propaganda, brainwashing people to conform to a certain belief, making everybody the same.  THANK GOD for being unique., thank God we have the freedom to interpret films, books and art – if everybody had the same opinion and experience then the world would not be a very exciting place