I wached an economics video June 21th. I major economics in the university, so I can understand easily. I learned that “incentive” decide action. It makes by rewarding and contingency fee. In the case of child raising, generally speaking, parents apt to have their children learn music and studing. However, in the terms of economics, super market is good for children because there are a lot of things to learn. In the scene of name, I think that there is no discrimination by name differences in Japan, but this video shows that “name” was commercialised. I was surprised it and I can’t understand. Economic disparity is a serious social issue, so we think it carefully. In the scene of injustice, especially, I was surprised. “Sumo” is the most Japanase cultural sports. I think there is no injustice, but there are a lot of injustice. I felt angry and frastrate because I think that Sumo is sacred sports. In the video, economists conduct an experiment. The content is whether lead success by purchasing hih school students. It is an interesting experiment. I think that is “incentive” is important to be trusted. I major economics, so I come to interest in it. I think bias problem is very difficult to solve, but it is necessary to solve.