我为什么存在? 祖母才是人类进化的关键_BEC初级作文

我为什么存在? 祖母才是人类进化的关键

It turns out that my existence may actually be the key to human nature. This isn't a megalomaniacal boast but a new biological theory: the 'grandmother hypothesis.' Twenty years ago, the anthropologist Kristen Hawkes at the University of Utah went to study the Hadza, a forager group in Africa, thinking that she would uncover the origins of hunting. But then she noticed the many wiry old women who dug roots and cooked dinners and took care of babies (much like me, though my root-digging skills are restricted to dividing the irises). It turned out that these old women played an important role in providing nutrition for the group, as much as the strapping young hunters. What's more, those old women provided an absolutely crucial resource by taking care of their grandchildren.

原来，我的存在实际上可能是人类本性的关键。这不是狂妄自大的吹牛，而是一套新的生物学理论：“祖母假说”(grandmother hypothesis)。20年前，犹他大学(University of Utah)的人类学家克里斯滕・霍克斯(Kristen Hawkes)去非洲研究狩猎采集族群“哈扎”(Hadza)，以为她会揭开狩猎的起源。但去了之后她注意到很多身材精瘦的老妇人负责挖植物的根、做饭、照顾孩子（跟我很像，不过我挖植物根的技能仅限于掰鸢尾根）。原来这些老婆婆对于为集体提供营养发挥着重要的作用，不亚于那些年轻强壮的狩猎者。另外，老婆婆们照管孙辈，提供了一种绝对重要的资源。

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