sciencehabit writes "Robert Zemeckis, take note. Using videos that morph the face of a baby or man into a doll, researchers have figured out at what point we stop considering a face human — and start considering it artificial. The ability, the researchers say, is key to our survival, enabling us to quickly determine whether the eyes we're looking at have a mind behind them. It may also explain why so many people hated The Polar Express."
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