distinguish between adaptations and byproducts and accidents.

将适应性与副产品和意外区分开来
Many of you are currently,

你们许多人正在
or will as you get older, suffer back pain.

或者将来老了时会被背痛折磨
If I was to ask you, "So, why do you suffer back pain?

如果我问你你为何会背痛
How does back pain help you survive and reproduce?"

背痛如何帮助你存活和繁衍的呢
Well, the answer is it's not an adaptation.

答案并非适应性
Back pain is an accidental byproduct of how our backs are shaped.

背痛是我们背部形态的意外副产品
Don't go looking for an adaptive reason for hiccups

不要期待找出打嗝自怜
or self-pity or bloating after you eat.

或者饭后腹胀的适应目的
There's all sorts of things a body will do

身体会做各种各样的没有任何
that have no adaptive value, rather just accidents.

适应目的只是意外的事情
We have a body that does all sorts of things.

我们有个会做各种事情的身体