But to get us started, I want to ask if everyone could just close your eyes for two seconds and try and think of a technology or a bit of science that you think has changed the world.
우선 시작하기 전에 여러분께 부탁드릴게요 2초 동안 눈을 감고 여러분이 생각하시기에 세상을 바꾼 과학 기술이나 과학적 발견을 떠올려 보세요