translation.en: But I wanted to check if this is true. So what I did last year was we hired a car, looked up on Google, found a route into northern India from New Delhi which, you know, which did not cross any big cities or any big metropolitan centers. Drove out about 300 kilometers, and wherever we found a school, administered a set of standard tests, and then took those test results and plotted them on a graph.
translation.zh: 我想验证这个猜测是否与事实相符。所以去年， 我们租了一辆车，在Google上 查到一条从新德里到印度北部地区的路线。 这条路不经过任何大城市， 或都市中心。我们开沿路了300公里， 每当找到一个学校，我们就进行一套标准测试， 将测试结果制成图表。