本篇作者通过个人的经历，指出许多人都犯的一个通病：对我们常见到的人成事物熟视无睹，直到有一天这个人或事物突然不见了，我们才发觉我们失去了什么。从而呼吁人们多关注我们周围的人。
We may look at the world around us, but somehow we manage not to see it until whatever we've become used to suddenly disappears. 1 , for example, the neatly-dressed woman I 2 to see -- or look at -- on my way to work each morning.
