The strangest process creatively to do is casting. Its necessary to bring a character to life but Its based on multiple levels: the voice of a person, pitch and tone, accent and inflection. The presence both physical and emotional of the actor, if someone is too bland its not going to work. They need a spark to make their role stick. The right body type for the character is important especially in still images. Its a fine line between an image that has to sell and the pleasure of the eye with lines and shape. It has to work aesthetically. Being politically correct doesn’t work in actual practice. Its either full on or go home.