text: Some think the computers need to learn non verbal communication. In the article it says imagine a computer that knows your happy or sad. for example, if you smile when the web ad appears on your screen, a similar ad might fallow. But if you frown, the next ad will be different. A classroom computer can tell if the students are becoming confused or bored. Dr. Huang thinks he can modify the lesson, like an effective human instructer. " Most humans Communication is nonverbal, including emotional communication."