You said, "One is that robot is much faster and more accurate than human. It seems nothing, but this will have a big impact on Korea, such as increasing production and gaining profits nationally." I agree with that robots are much faster and more accurate. But using robots costs a lot of initial investment. Only rich people can jump into the robot industry, while poor people lose their jobs. So it will lead to the gap between the rich and poor. So, I think that replacement of humans by robots will cause loss in society, not profits of society in the end.