TED演讲：拥有大脑的真正原因(11)
时间：2018-11-23 04:51:26
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（单词翻译）
But we've got a problem. Tasks are symbolic1 -- I want to drink, I want to dance -- but the movement system has to contract 600 muscles in a particular sequence. 但在这里出现问题了。动作任务是符号性质的--我要喝水，我要跳舞--但是运动系统需要按特定顺序收缩600块肌肉。
And there's a big gap between the task and the movement system. 况且有一个巨大的鸿沟横在动作任务和运动系统之间。
So it could be bridged in
infinitely2 many different ways. 意思是我们有无穷多种方式越过这个鸿沟。
So think about just a point to point movement. 来考虑仅仅是点到点的移动。
I could choose these two paths out of an infinite number of paths. 我可以在无穷条可能的路径中选出这两条。
Having chosen a particular path, I can hold my hand on that path as infinitely many different
joint3 configurations5. 选定一条特定路径之后，我可以把手放在这条路径上，但是又有无穷多种关节构型。
And I can hold my arm in a particular joint
configuration4 either very stiff or very relaxed. 另外我把的胳膊固定在某一种构型之后，我可以紧张，也可以松弛。
So I have a huge amount of choice to make. 所以我有非常多的选择余地。
Now it turns out, we are extremely
stereotypical6. We all move the same way pretty much. 不过结果是，我们都特别典型。都基本上用同一种方式移动。
So if I take some dots and set them in motion with biological motion, your brain's circuitry would understand instantly what's going on. 因此如果我拿一些点，然后让它们按生物动作形式来运动，大家的大脑回路会立即知道怎么回事。
Now this is a bunch of dots moving. 好了，这仅仅是一堆点在动。
You will know what this person is doing, whether happy, sad, old, young -- a huge amount of information. 我们就知道这个人在做什么，是喜还是悲，是老还是少--很大量的信息。
If these dots were cars going on a
racing11 circuit, you would have absolutely no idea what's going on. 如果这些点是赛车在赛道上绕圈，我们对发生了什么就完全没有概念了。
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