OMG moment for mankind. Selmer Bringsjord, one of the RPI researchers, conducted a similar test with three robots. Having shut down the ability of two robots to speak, the researchers asked all three robots the same question: "Which of you can still speak?" While both robots answered "I don't know" to this question, only one succeeded. Realizing that he could still speak when he heard his own voice, the robot said, "Okay, now I know."