If there is a day when I can change the world I will change the things that I am not satisfied with about this world. A flat world? How do you think about it? When it comes to being a flat world, I don't care about being laughed at when trying to speak English with foreigners, and of course, they laugh at my dumb pronunciation. A flat world is always my wish. What about work? I will create a variety of jobs according to people's needs and the economy will increase rapidly with each year. One more thing that I want to change is the school's teaching style, the old teaching style is a pain for me and my students because it is too much and too difficult to absorb, so if I have I will change the way I teach so that it can be easily acquired through many ways such as listening to reading and writing. So how would you change the world?