Warmup 12

Eyes are cool. They can tell you a lot about a person. In the history of portraiture (pictures of people), placing the dominant eye (the one nearest to the viewer) in the center of the picture seems to be the way it's done. Here are some examples:

And these from Greco-Egyptian mummies:

And here are some photos:

Why do you think that this is done? Write down what you think is a reasonable explanation.