A further step forward came with "the Polar Express" (2004), directed by Robert Zemeckis, the first entirely computer-generated film to use facial capture.
In the experiments, participants were asked to keep their gaze directed toward the center of a computer screen.
在实验中，受试者被要求一直盯着电脑屏幕的中间部位。
3
Within ten years we will have computers that respond to goal-directed conversations, but for a computer to have a conversation that takes into account human social behavior is probably 50 years off.