And this is a question which is a deep one

这涉及到了一个更深层次的问题
and we'll wrestle with it a little bit actually towards the end of this lecture.

接下来的课程中我们会对此进行细致的分析
What about somebody who acts in a kind of unusual or zany way?

一些滑稽荒唐的表演算精神病吗
This is originally supposed to be a picture of the character

这是宋飞正传里面的人物
Kramer on "Seinfeld"

克莱默的一幅截图
but given his unusual antics in the last few months,

显示了过去几个月他的一些不正常的行为
it could be a picture of the actor who plays him

图中应该是剧中主角
who got into all sorts of trouble.

陷入困境的样子
What about someone who is just kind of wacky?

那么一些古怪的行为算精神病吗
At what point does wackiness move into the domain of mental illness?

到什么程度古怪的行为会变成精神病
What about unusual lifestyles

那与众不同的生活方式
such as extreme altruism?

比如极端利他主义呢