translation.en: More people, and it's the combination of all the things we've talked about -- technology and its transformation effect on work, and demography and the huge explosion in population.
translation.zh: 这就是人口增长造成的， 人口增长关系到 我们谈论的许多话题-- 包括技术和技术变革 对生产力的影响、人口统计学 及人口爆炸。