translation.en: Because when people talk about intervention, they imagine that some scientific theory -- the Rand Corporation goes around counting 43 previous insurgencies producing mathematical formula saying you need one trained counter-insurgent for every 20 members of the population.
translation.zh: 因为当人们谈干预时， 他们认为一些科学的理论依据-- 围绕着兰德集团 计算43个已有的叛乱 造出数学公式 说你需要对每20个人口的成员