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There's a problem with that and the problem is that countries that are less successful don't keep data--that's a problem.
但这个研究方法也有问题,在那些不太成功的国家里,数据并不充分,这是个问题
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And you decide that the way this is going to be resolved is to talk to your bosses.
于是你决定跟老板们谈谈，这是解决这个问题的方法。
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I don't know how to make this point any clearer than to share with you a sampling of the student evaluations.
最能让这个问题明了的方法是,和你们分享一些学生们的评估抽样。
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I'll let you chase it through, it does work. What I want to look at is, what's the order of growth here?
我会让你们去运行这个方法的，确实能得到正确答案，我想问的是，这个解决问题的方法的增长率是什么？
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What are its methods? This is a question asked you might say of every mature science.
我们如何教育一位潜在的政治家,其方法为何？这个问题。
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And we want to do that in tangible, concrete ways, but the question is how? -Absolutely.
而且想用实际具体的方法来实现这个目标，但问题是怎么做？，-对。
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The way we use technology to overcome that is we have a lot of simulations and visualizations set up, built around in the virtual spaces.
我们用技术来解决这个问题的方法,是我们用很多模拟实验,以及直观化实验，放在模拟空间里。
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Here, the problem is solved by injecting it directly into the cell, shown here, and then that's one issue with gene delivery.
现在,这个问题已经通过,将其直接注入细胞的方法解决了,图上这里,这只解决了基因输送的一个问题
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You can have your own mnemonic device to figure that out, but anyway.
反正你可以用你自己的记忆方法,来解决这个问题。
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So you can actually say, how do I know which methods are associated with the class? For that, we can call dir. And what it does, is it gives me back a listing of all the things, dir all the methods, that are associated with it.
我们开始建立类了，我们得到了这些方法,因此实际上你可以说，我怎么知道，哪些方法是关联与这些类的？,为了解决这个问题，我们可以调用，这个方法的作用。
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That gets us to the smart thief. Why is this thief smart? Because she took 600. And she learned 600 that in fact there is a good way to solve this problem. And that's what we're going to talk about next. And that's something called dynamic programming.
现在我们要当聪明的贼,这个贼为什么聪明呢？,因为它选择了,它知道这事实上是解决这个问题的好方法,这就是我们接下来要讲的,也就是动态编程。
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That's the question we're going to try and address. If we can do this, this is good, because first of all, it removes any questions about what machine I'm running on, it's talking about fundamentally, how hard is this problem, and the second thing is, it is going to do it specifically in terms of the input. Which is one of the things that I was worried about.
这是一个我们接下来要去,尝试和解决的问题，如果我们能做到的话会很不错，因为首先，它解决了结果可能和我,运行的计算机有关系的问题，因为这从根本了告诉了，我们这个问题的复杂度，第二件事情,就是这种方法可以依据输入的大小来计算,而这正是我最担心的地方。
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The printout is simply telling me, what are the ranges of the search.
你可以看到这个方法每次都将，原问题的规模缩小了一半。
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And helping students to gain skills to answer that question.
帮助学生掌握回答这个问题的方法技能。
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The problem with it is that you also can spread other diseases in that way.
这个方法的问题是,其它疾病也会通过这种方式来传播
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