translation.en: It was a very short life. But at the same time anthropologists know that most hunter-gatherer tribes of the world, with that very little technology, actually did not spend a very long time gathering the food that they needed: three to six hours a day.
translation.zh: 生命太短暂。但同时 人类学家知道 世界上多数狩猎采集部落 使用很少的技术，其实他们并没有花 很长的时间采集他们所需要的食物。 一天3至6小时狩猎采集。