We have the dialectic of suspense on the one hand, how will this be resolved, and inevitability on the other, "Oh, it's a folk tale, it'll be resolved, don't worry about it."
我们一方面有悬念的对立,就不可避免地会有,另一个方面,即这个会怎样解决,“哦,这是个传说,这会解决的,不用担心它“
they need to be able to talk through that problem with their peers.
他们要学会怎样和同龄人沟通解决问题。
So if I try to apply the same logic, well how can I divide and conquer this problem.
如果我想要用同样的逻辑,那么怎样划分,并解决这个问题呢?
PROFESSOR: Great question. So the question is, how do you choose an algorithm, why would I choose to use a pseudo-polynomial algorithm when I don't know how big the solution is likely to be, I think that's one way to think about it.
教授:问得好,所以问题是,你怎样选择算法,为什么当我,不知道解决方案会有多大的时候,我要选伪多项式算法呢,我想这是一种思考问题的方式。
The problem it solves for the cell is how to do I make a barrier around myself to define what's in me and what's outside of me when most of what's around me and what's in me is water.
它为细胞解决的问题是,当我体外和体内大部分都是水情况下,我怎样在自己周围设置一个界线,来区分什么是体内的,什么是体外的
You say, "Yeah, here's a math problem I haven't solved before, but so what? I've just done so much math, " it holds no appeal to me before."
你会说“是的,我没解决过这个数学问题,那又怎样?我研究了太久的数学,我对它失去了兴感“
All right. So what's a quick fix?
好的,怎样快速解决这个问题?
STUDENT: So, how do you come to a conclusion as to which you should use then, if you can determine the size based on solution, or based on input, so how do you decide?
学生:所以,你怎样决定你该用,哪个来算呢?现在如果你可以选择是,基于解决方案的大小,还是基于输入的大小,你应该怎样决定呢?
So let's actually see how we solve this with this function with actual code.
然我们看看怎样用,这个函数和代码解决这个问题。
You can take a problem that might be relatively intuitive to solve but when you scale this thing up as is increasingly the case in the web, in large data systems, and so forth, you actually have to now think smart, you actually have to think efficiently and you have to solve this problem effectively.
你可以把一个问题用比较直观的方法解决,但如果你把此类问题的数量增大,正如越来越多的互联网,和大规模数据系统中出现的问题等等,你应该考虑怎样才能更简便,怎样才能更高效,你应该用行之有效的方法处理问题。
This solves a major problem which I'm going to talk about just at the beginning of class here in a slide or two, is how to get DNA into cells?
这解决了我要讲到的一个主要问题,就是在这节开始的一两张幻灯片中要讲的,怎样将DNA导入细胞的问题
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