Something was missing, you know. I mean, these are -- it's kind of weird to think that someone had to do an experiment to show that, but that was what was going on at the time.
뭔가가 이치에 맞지 않지만 17세기 사람들은 이 당연한 사실을 실험을 해서야 이해하게 되고 그래서 이 시기에 이 실험이 필요했던 것입니다.