Ms. Knight also has programmed Data to gauge audience response, both by hearing laughter and applause through the microphones in his ears and by seeing green and red cards held up by audience members through the cameras in his eyes.

WSJ: Heather Knight and Data: A Researcher and a Robot Walk Into a Bar... | Creating

Effort? (Laughter.) Some of you have had that conversation. (Laughter.) And it was pretty jolting hearing my mother say that.

WHITEHOUSE: The President��s Back to School Speech

So is the conversation sometimes. (Laughter.) So I am looking forward to taking your questions and hearing about your concerns.

WHITEHOUSE: Town Hall in Los Angeles