记住这是在1838年，“自力更生”在当时是一个新奇的概念，美国公民对他们自己作为个人和作为美国人的安全感较低。

Remember this is 1838, "Self-Reliance" was a novel idea at the time and the United States citizens were less secure about themselves as individuals and as Americans.

youdao

而且无论多大的数目，也只是概念上的，因为没人有能力支付，这样会引起一种无助感的产生。

And whatever huge figure is arrived at will be notional, because no one can afford to pay it, which can invite feelings of helplessness.

youdao

我开始考虑，注意力这个概念就是如何设计有浸入感的UI的关键。

I am beginning to think that the whole idea of attention is a key to designing an engaging UI.

youdao

My hope is that if I do it well enough, people who aren't philosophers and are interested exclusively in conceptual analysis will get something out of it.

我希望如果我做得足够好，可以让那些不是哲学家但是,对概念分析感兴趣的人,得到一些启发。

麻省理工公开课 - 电影哲学课程节选