Usually any discussion happens in a group of three to four people. The next time you are part of such a discussion or happen to witness one, try experimenting this theory. If there is a listener to the ongoing discussion, observe when does he or she blink. If the discussion is interesting enough, the blink happens between the time when the eyes turn from one speaker to another. Implying that the object of interest here is just the face of speaker. The information that could have been registered through the eyes while turning from one speaker to another is discarded by the brain as unnecessary. Hence it uses this very time to perform the routine but necessary task of blinking. Using this as a theory, let’s take a closer look at Editing. Consider a situation where two people are talking to each other. We are looking at the person’s face all the time. When the person reaches an important juncture of the conversation, we turn curiously to see its impact on the other person’s face, who was listening to the conversation all the while. The entire theory of Editing is built on this very natural behaviour of the brain. This has been explained in detail by Mr Walter Murch in his book, In the Blink of an Eye. It’s a must read for people interested in the theory of Editing.