translation.en: Two weeks ago, I just got back from Papua New Guinea where I went up to the highlands -- very isolated tribes of subsistence farmers living as they have lived for millenia.
translation.zh: 两周前， 我刚从巴布亚新几内亚回来， 我去了那儿的高地 -- 与世隔绝的村庄，勉强谋生的农户， 他们一千多年来的生活方式从未改变。