“Merida’s hair is made up of 1,500 individually sculpted curves, distinct points in a three-dimensional space, that are programmed to bounce and interact in relation to one another via a new software system,†reports The Wall Street Journal, adding, “Another software program was created to make the hair react more realistically to the character’s movements and surroundings.†Well, somebody’s got to represent for the redheads this summer if Emma Stone is opting out.