From GeminoidDK
In 1950, Alan Turing proposed a simple experiment to determine when computers would have acquired artificial intelligence (A.I.): if we cannot tell the difference between a computer and a real human being, then the computer can be considered to have acquired A.I. He was talking more about computer programs and algorithms, and a written or verbal exchange between computer and human.
However, to achieve real life-like A.I. in a robot, we need to be unable to tell the robot from a human. Watch the video and be amazed at how much progress has been made to make this a reality.
source popsci