But there were also plenty of places in the world where societies have been developing for thousands of years without any sign of a major collapse, such as Japan, Java, Tonga and Tikopea. So evidently, societies in some areas are more fragile than in other areas.
但是这个世界上还有很多地方， 都有着上千年的历史， 却从未有过彻底的崩溃。 譬如：日本、爪哇岛、汤加以及蒂科皮亚。显然， 与其他社会相比，有些社会更加脆弱一些。