Draw a box around that, because that's going to be...

我把它框起来了 因为这会是

of what you know in one dimension.

简单地推广到了二维罢了

and how it extends.

及其相关概念都简单易懂

And stimulus generalization is the topic

刺激泛化是

That's the meaning of a 60-watt bulb.

这就是六十瓦灯泡的意思

which is when the force is not a constant but varies with x.

就是当力随着 x 改变而不是恒定值的情况

So are there any questions about that?

还有其他问题吗

ticket example where the football tickets end up in the

这个例子里面 最想得到这张票的人

So the crucial point right now is that thinking about

所以现在问题的关键点是

that invisible things can't be destroyed.

这个结论的反例是否合适

and nobody lines up to protest this.

没人聚集起来去抗议这点

On the other hand, what if insurance companies determined

另一方面 如果保险公司断定