And I think there's that constant tussle going on in us Circumstances can push someone one way while another certain encouragement pushes more towards acting ethically.
在我们的内心时常会有这样的斗争,特定的环境促使我们选择漠视,同时,一些鼓励促使我们依照道德行事。
We also have a lot of academic freedom. We can take whatever classes we want.
在布朗,我们有很大的学术自由。我们可以自由选择想要上的课程。
So that is relevant for all of these atoms here, so we actually have several different possibilities.
相关的原子都在这里,实际上,我们有几种可能的选择。
We've got the choices they could make: that's their strategy sets.
我们有他们可能选择的策略,就是策略集合
Depending on where the assets expected returns are and the assets' standard deviations, we can see that we might be able to do better than--have a lower variance than either asset.
根据资产的预期收益,以及收益的标准差,可以看到我们有更好的选择,这里的方差值比以上两种方案都要低。
Well, unlike the choosiness studies, here we actually have some pretty good cross-cultural data So one study, for instance, was done in 10,000 people from thirty-seven countries, ?" asking people, "Who do you want to be with?"
与伴侣选择标准研究不同,我们事实上有一些很好的跨文化数据,例如,有一个调研,以来自37个国家的1万个人为调研对象,问他们“你最想和谁在一起“
On the other hand, we've seen n that if the size of a is n, that's to say, we have n elements to choose from, then the number of possible subsets is 2 to the n.
另一方面,我们看到,如果a集合的大小是,也就是说我们有n个元素可供选择,而可能的子集的元素,个数就是2的n次方。
Because there are so many possibilities.
因为我们有太多选择了。
So let's do a quick clicker question, and you tell me how many valence electrons does fluorine have? Remember, valence electrons are different from core, they're only the outer-most electrons in the outer-most shell.
那么让我们来做一个小选择题,请大家来告诉我,氟有多少个价电子,要记得,价电子与芯电子不同,它们是在最外壳层的最靠外面的电子。
Notice that once we've deleted the dominated strategies, you know I had said before about four people chose this strategy, and in here, about four people chose this strategy, but in this range 30 through 45, I had lots of people.
注意,一旦我们剔除了劣势策略,我们已知有四人选择了,在45到67之间的数,但是选择30到45的有不少
And in this case we have three choices here in terms of what's going to be in the middle, so we need to decide that first.
而这种情况下对于哪个原子,在中间我们有三种选择,这是我们首先要确定的。
How many of you chose 1? Look around the room.
有多少人选择了1,我们来看看
And I picked looking at methane so we could see if there are other factors that we're not considering, that we need to maybe tweak our model a little bit, and I think we'll find that we do if we take a look at a polyatomic molecule, methane, CH4 so c h 4.
我选择甲烷这个例子,我们可以看到,如果有一些我们没有考虑到的因素,我们需要修改一下我们的模型,我们看一看,甲烷CH4这个多原子分子,就会知道这一点,甲烷。
s Then we go up to the 2 s, and we have two electrons that we can fill in the 2 s.
然后我们上升至,我们有两个电子,可以填充至2s选择。
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