I wonder have any of you reflected on, I don't want to call it shadow side, is not domesticated.
不知道你们有没有人想过这个问题,我不想说这是自然的阴暗面,无法驯化的一面。
I get so upset when you just try to avoid the problem.
你想逃避这个问题,我还挺生气的。
I want to spend some time on that until we talk about-- before we talk about development of the polio vaccine.
我想多花些时间讨论这个问题,在我们讨论,在我们讨论脊髓灰质炎疫苗的发展之前
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?
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?
And I thought about this question for a minute and I realized that there is no Wow.
我想了一会这个问题,然后意识到根本没有什么惊奇可言。
Now, I want to say one other quick thing before we get to the substance.
现在,我想简单提一点别的东西,然后我们再继续讲这个问题
Because I thought about it a lot Welles chose that word I guess obviously that frame was a happy picture ? In the word? Why that word?
因为我对这个问题想了很多,为什么威尔斯要选择这个词,我觉得很明显,这个镜头是幸福的,词内涵的深意?还是为什么选这个词?
I want to begin next class with this question, the question of animals.
我想在下节课开始的时候讲讲这个问题,这个关于动物的问题
I'd like to start with the question,and the question is what is desire.
我想以一个问题开始,这个问题就是,什么是欲望。
Until that's resolved, I don't think we can never be comfortable.
在这个问题解决之前,我想我们不会安心的。
I leave you with this question to think about.
我让你们自己去想这个问题。
I was wondering how you feel about that?
我想知道你是怎么看待这个问题的?
When I think about what I want-- and I'm just going to invite you to,each one of you, to ask yourself what is it that you want, what matters to you in survival?
我思考自己想要什么这个问题时-,我也请你们每个人都,问问自己这是不是你们想要的,你们想要存活是为了什么?
Now what I'd like to do is something that you'll probably cut out because of copyright issues but it's a kind of fun warm-up anyway, so we're going to go ahead and do this and then we'll actually start.
首先我想做个小游戏,不过这个片段可能由于版权问题而被切掉,但是这个热场游戏很有趣,那么,我们马上开始,游戏之后再正式上课
What I'd rather have is your interpretation of things like I thought this thing was really interesting and here's why, or I remember back in week two of the class we talked about this issue and it links up with what we're now talking about in week eight, or I just saw something on the news and here's how it relates, and all those sort of things are the way the concept sheets go.
我想看到的是你们自己对于问题的理解,比如我认为这个问题很有趣,原因如下,或是,我想起之前在第二周谈到的问题,和现在第八周正在讨论的内容有联系,或是,我看到条新闻和课程有所联系,这些东西都能写到观点报告里
I think there is the essence of personal challenge in dealing with that.
我想关于这个问题,个人面对的挑战是关键。
And part of the reason for putting it up is that I want to, as much as possible, answer that question by separating out the mechanism, which is the computer from computational thinking. Right.
提出这个问题的原因有一部分在于,我想尽量,将计算机与,计算思维分开,来回答它。
And in particular, if I think about that problem - actually I want to do this- if I think about that problem, I'm going to write a little piece of pseudo code.
关于这个问题尤其要注意的是,实际上当我考虑这个-,问题的时候我想这么做,我会去写一点伪代码。
You know about this but maybe you haven't thought about it at this level of detail, but you know that when you - after you eat, you eat lunch for example.
你们学过胰岛素了,但可能没有在我讲的层面上想过这个问题,但你知道的,吃饭以后,比如说你们吃午饭
So, I just don't think about it.
所以,我不去想这个问题。
The question was whether we were looking to take more short positions as the economy appears to be moving into recession and I guess the second part of the question was how do you remain bullish in this kind of environment.
问题是,在经济表现出走向衰退时,我们是否会做更多空头,我想这个问题的另一面就是,在那种情况下如何保持市场信心
So the question I want to leave you with today and that I want to pick up again on Wednesday is, ? in the end, what do societies require more of?
所以我今天想留一个问题,下周二你们要得出一个答案,这个问题就是社会更需要什么?
All right. So it's fun, and I got a little bit of applause out of it, which is always nice for me, but I also showed you how to think about it recursively.
好,挺有趣的,我也得到了一点掌声,这让我挺高兴的,但是我想让大家明白,怎么用迭代的思想来解决这个问题。
But what I really want to talk about is, what's the order of growth here?
但是我这里真正想讲的是,这个问题的增长率是多少?
So if I were to solve this problem, here's the way I would do it. I would say, first thing I want to do, is I want to input a value for the base as a float.
如果我想要解决这个问题,这就是我要解决它的方式了,第一件我要做的事情就是要,输入一个浮点数作为三角形的底。
I just wanted to try to put that in perspective.
我只是想用正确的眼光看待这个问题
I'm given an integer that's a perfect square, and I want to write a little piece of code that's going to find the square root of it. All right so I'm cheating a little, I know it's a perfect square, somebody's given it to me, we'll come back in a second to generalizing it, so what would the steps be that I'd use to walk through it?
完美平方数的整数,我想写一段代码来求这个数的平方根,好,我这儿有点儿作弊了,我知道这是一个完美的平方数了,他们给我的,我们后面会讲怎么产生这个数的,那么我想解决这个问题,需要什么步骤呢?
I don't find that my analysis is profound in the final answer, I just took some estimates using my data and, again, we could-- if someone wanted to argue with us they could argue with my estimates of the expected returns of the standard deviations and the covariances, but not with this theory.
我在计算过程中并没有做太深入的分析,我只是用我的数据做了一下大概的估计,我再说一次,我们可以-,如果有人想就这个问题与我们争辩,他们可以争论我对期望收益的估计,或是争论标准差和协方差的估计值,但并不会针对理论本身。
I'm going to come back to it; it doesn't always work out as perfectly as you want.
之后我还会继续谈谈这个问题,事情并不总是如你想得那般完美无缺
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