下面是小编为大家整理的TED英语演讲：我们为什么快乐,供大家参考。
《撞上快乐》的作者丹吉尔伯特挑战不快乐是因为我们没有得到我们想要的东西的观点。我们的心理免疫系统能让我们感到正真的快乐，就算是事情并不如我们所愿。下面是小编为大家收集关于TED英语演讲：我们为什么快乐，欢迎借鉴参考。
演说题目：我们为什么快乐
演说者：丹吉尔伯特
When you have 21 minutes to speak,two million years seems like a really long time.But evolutionarily,two million years is nothing.And yet in two million years,the human brain has nearly tripled in mass,going from the one-and-a-quarter pound brain of our ancestor here, Habilis,to the almost three-pound meatloafthat everybody here has between their ears.What is it about a big brainthat nature was so eager for every one of us to have one?
相对二十一分钟的演讲来说，两百万年显得非常漫长。但是从进化的角度来看，两百万年只是一瞬间。在两百万年中，大脑脑容量从我们祖先能人的1.25磅，增大了近三倍成了现在的3磅。自然给予我们的大脑有什么特别之处呢?
Well, it turns out when brains triple in size,they dont just get three times bigger;they gain new structures.And one of the main reasons our brain got so big is because it got a new part,called the frontal lobe.Particularly, a part called the pre-frontal cortex.What does a pre-frontal cortex do for you that should justifythe entire architectural overhaul of the human skullin the blink of evolutionary time?
当我们的脑量扩大三倍的时候，大脑不仅仅在体积上有了改变，它在结构上也发生了变化。我们大脑变大的最大原因就是它有了新的一部分，叫做额叶。其...
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