The industrial revolution is a hot topic these days. Humankind is entering the fourth industrial revolution with cutting-edge technology like artificial intelligence, the internet, robotics. Unmanned cars that drive themselves are one of the major new technologies. Advanced countries like the U.S., Germany, Japan, and China are competing fiercely to invest in this fields. Korea is a latecomer, But, It is increasing investments. There are many advantages, But many are concerned that A.I. will result in fewer jobs for people. They are worried that their skills and know-how will be replaced by machines overnight.