When I was an elementary student, I had a chance to subscribe a scientific journal called “과학소년” for quite a long time. As a child, I dreamed about being first scientist who build a car that can fly. But through the youth with all kind of tests and grades, my dream has gone, and I know there are invented a flying car, actually selling (PAL-V Liberty) right now. So, I was getting older with no idea of what I want to be, I just forgot about this science journal at all. But when I got this essay assignment, it came to my mind.