Let me tell you two stories that might-- well, look, before I tell you the stories here's the other side.
让我告诉你们两个故事-,在我讲故事之前,先讲下另一面。
Well, put a pretty face here, an ugly face here, see if the baby prefers to look at the pretty one.
在这边放一张漂亮的脸庞,在这边放一张丑陋的脸庞,观察婴儿是否更喜欢注视漂亮的那个
Now. You might look at that and say, well that's just a lot like what we had over here Right? We had some additive constant plus a simpler version of the same problem reduced in size by 1.
现在你可能会看着这个说,这很像我们以前做过的,对不对?我们用一些附加的常量,加上问题的另外一个规模缩小了1的,简化版本来代替这个问题本身。
Well, if we look back at the code here, take a look at what we're really doing.
好的,如果我们回过头来看代码,看看我们到底做了什么。
Well, suppose I want to look at something like an electron in orbit here.
假如我想看到,轨道上像电子一样的东西。
Well we can go look up here, looking at the differential, there are no approximations here.
好的我们可以看这儿,看这个微分方程,这里没有做近似。
Well look, here I have a line of slope -2b.
看一下这里,这条线斜率是-2b
Well just to see what we know what we're doing, let's look at this code here.
我们下一步该去怎么做呢?,好,让我们来看看。
Well, I could look at the value here, and compare it to the value I'm trying to find, and say the following; if the value I'm looking for is bigger than this value, where do I need to look? Just here.
然后把它和目标数做个比较,然后做出如下的判断:,如果目标值大于这个值;,那么我应该去哪找呢?对,应该在这里,对不对?不可能在那儿。
PROFESSOR: No. I'm entering -- well, let's look at the example right down here.
教授:弄,我是通过,好,让我们来看看下面的例子吧。
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