LIEBERMAN: I'm a professor of human evolutionary biology at Harvard.

利伯曼：我是哈佛大学人类进化生物学教授。

LIEBERMAN: The basic foot we all inherited is probably a pretty good foot.

利伯曼：我们都继承了基本的脚， 可能是一只相当不错的脚。

LIEBERMAN: When you walk around and see people, most of the day, you see people just walking. Right?

LIEBERMAN：当你走来走去看到人们时，一天中的大部分时间，你看到的都是人们在走路。正确的？

LIEBERMAN: People have been wearing shoes probably for thousands and thousands of years.

LIEBERMAN：人们可能已经穿鞋几千年了。

LIEBERMAN: Well, look, I wear shoes most of the time.

LIEBERMAN：嗯， 你看，我大部分时间都穿鞋。

LIEBERMAN: For millions of years, the most lethal technology available to our ancestors was a sharpened wooden stick or a club.

利伯曼：数百万年来，我们祖先可用的最具杀伤力的技术是削尖的木棍或棍棒。

LIEBERMAN: We have abundant evidence that what people did was run animals in the heat to a state of hypothermia.

LIEBERMAN：我们有充分的证据表明人们所做的是让动物在高温下进入低温状态。

LIEBERMAN: Just so you know my perspective — despite what people sometimes say about me — I view shoes probably much like an economist.

LIEBERMAN：你知道我的观点——尽管人们有时会说我——我对鞋子的看法可能很像经济学家。

LIEBERMAN: And what we find — in those barefoot populations, we find almost no incidents, for example, of people having flat feet. They just don't exist.

LIEBERMAN：我们发现——在那些赤脚的人群中，我们几乎没有发现扁平足等事件。他们只是不存在。

DANIEL LIEBERMAN: You put a box—and you put a box and turn the treadmill on and, you know, the pig doesn't like having its butt hit the back.

丹尼尔·利伯曼：你放了一个盒子，然后打开跑步机，你知道，猪不喜欢屁股撞到背部。

DANIEL LIEBERMAN: Well gosh, so I mean I've been interested in the evolution of the human body and the evolution of human physical activity for a very long time now.

丹尼尔·利伯曼：天哪，我的意思是，很长一段时间以来我一直对人体的进化和人类身体活动的进化感兴趣。

LIEBERMAN: We try to understand how, for example, the foot works and then test hypotheses about how feet function, and how variations and foot anatomy affect function, hence performance.

LIEBERMAN：例如，我们试图了解足部的工作原理，然后检验关于足部功能、变异和足部解剖结构如何影响功能进而影响表现的假设。