摘要：快乐有什么产生？我们并不是再讲精神上的快乐，而是生理上的快乐！人的身体究竟怎么样才能制造出快乐？ 快跟着但吉尔伯特和他的演讲一起来揭秘快乐的来源。

《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。

究竟我们的快乐之源于什么?快和澳际君一起走进丹·吉尔伯特从生理和心理等等层面对于人类快乐来源的分析!

英文演讲稿：

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 meatloaf that everybody here has between their ears. What is it about a big brain that nature was so eager for every one of us to have one?

Well, it turns out when brains triple in size, they don't 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 justify the entire architectural overhaul of the human skull in the blink of evolutionary time?

It turns out the pre-frontal cortex does lots of things, but one of the most important things it does is an experience simulator. Pilots practice in flight simulators so that they don't make real mistakes in planes. Human beings have this marvelous adaptation that they can actually have experiences in their heads bore they try them out in real life. This is a trick that none of our ancestors could do, and that no other animal can do quite like we can. It's a marvelous adaptation. It's up there with opposable thumbs and standing upright and language as one of the things that got our species out of the trees and into the shopping mall.

All of you have done this. Ben and Jerry's doesn't have liver-and-onion ice cream, and it's not because they whipped some up, tried it and went, "Yuck." It's because, without leaving your armchair, you can simulate that flavor and say "yuck" bore you make it.

Let's see how your experience simulators are working. Let's just run a quick diagnostic bore I proceed with the rest of the talk. Here's two different futures that I invite you to contemplate. You can try to simulate them and tell me which one you think you might prer. One of them is winning the lottery. This is about 314 million dollars. And the other is becoming paraplegic.想要看到完整版本的英文演讲原文，你可以点击查看这里:TED演讲【我如何做到水下屏气17分钟】【内含中英文对照演讲稿】

中文演讲稿：

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。其中尤为重要的是前额叶外皮。 是什么让前额叶外皮成 人脑中如此重要的一部分?

脑前额叶外皮有很多功能， 其中最重要的是它拥有一种创造模拟经验的功能。 飞行员利用在飞行模拟器中的训练 来防止在真实飞行中产生失误。 人类有惊人的适应性， 他们可以在大脑中体验 未曾真实经历的东西。这个技巧是我们的祖先们都不会的， 也没有任何动物会。 这种适应性真不可思议! 这一特征和对生拇指，直立行走以及语言 使我们从树上 进化到了购物中心。

现在-(笑声)-我们大家都能做这些。 我的意思是，比如 Ben and Jerry's (一个冰激凌连锁店)没有肝和洋葱口味的冰激凌。 并不是因为他们试做了一下，尝了尝，而后“Yuck” (表示恶心)。 而是因为你坐在椅子上 就可以想象肝和洋葱的口味的冰激凌是怎样恶心了。

让我们来看看经验模拟器是如何工作的。在我继续我的演说之前让我们来做一个简短的试验。 这里有两个不同的未来，我想邀请你们一起来参与。 你可以幻想这两种未来，看看你更喜欢哪一种。 第一种未来是赢了价值3.14亿美元的彩票。 第二种是截瘫。 我给你们几分钟考虑一下。 你也许觉得根本不用考虑。

这里有一些很有趣的数据。这些数据显示了这两组人到底有多快乐。 是不是这正如你们所料? 可其实这是我胡诌的数据。

这才是真正的数据。你们都没有通过突击测试。这堂课开始还不到5分钟呢。 事实是，在失去双腿一年之后， 和在赢了彩票一年之后，中彩票的人和截瘫患者 的快乐程度几乎相同。想要看到完整版本的英文演讲原文，你可以点击查看这里:TED演讲【我如何做到水下屏气17分钟】【内含中英文对照演讲稿】

想要看到更多TED精华演讲视频?点击：TED演讲视频汇总