They say it shows the interconnected dependency that all humans have on each other.

VOA: special.2010.08.13

They believed the world was made up of a struggle between human autonomy, on the one hand, and human dependency on the other, and you should never give up on that dependency.

他们相信这个世界是由两部分组成,一部分是人自身的自律,而另一部分则是人类与人之间的相互依赖,你永远不应该放弃那种依赖

耶鲁公开课 - 美国内战与重建课程节选