The unsuccessful experiment of Microsoft with its AI algorithm Tay (Tay), which within 24 hours after the beginning of interaction with people from Twitter turned into an inveterate racist, showed that the AI systems that are being created today can become victims of human prejudices and, in particular, stereotyped Thinking. Why this happens – tried to find out a small group of researchers from Princeton University. In addition, they developed an algorithm capable of predicting the manifestation of social stereotypes based on an intensive analysis of how people communicate with each other on the Internet. Many AI systems undergo training in understanding the human language using massive collections of text data. They are also called corps.