translation.en: When you talk about self-paced learning, it makes sense for everyone -- in education-speak, "differentiated learning" -- but it's kind of crazy, what happens when you see it in a classroom.
translation.zh: 当谈到学生按自我步调学习时， 对每个人都有意义，就教育而言，因材施教， 但当你亲眼见到班级的情况时还是会很吃惊，