Security ... think about it!
Some sort of mental disconnect became clear in one of the lab's behavioral studies, where people looked at a gradual morph from a human face to a doll face. People quickly recognized the point where they became uncertain about whether the face was alive or not, when the morph was just 30 percent doll mixed in. However, the point at which they found the morph "creepiest" had much more of the doll face than the human face in the mix.