translation.en: Now, I do most of my speaking in front of an education crowd -- teachers and students, and I like this analogy: It shouldn't be a teacher at the head of the class, telling students, "Do this, do that."
translation.zh: 听我演讲的观众大都是教育圈子里的， 这其中有老师和学生。我喜欢这个类比。 不应该只是老师站在教室讲台上 告诉学生做这个做那个。