translation.en: They move up into that corner. And in the '90s, we have the terrible HIV epidemic that takes down the life expectancy of the African countries and all the rest of them move up into the corner, where we have long lives and small family, and we have a completely new world.
translation.zh: 他们向左上角移动 90年代恐怖的艾滋病流行 导致非洲国家的平均寿命缩短 而其他国家都向左上角移动 大家都有了长寿命和小家庭，而世界也焕然一新了