So to invoke another metaphor, if you imagine social networks as a kind of vast fabric of humanity -- I'm connected to you and you to her, on out endlessly into the distance -- this fabric is actually like an old-fashioned American quilt, and it has patches on it: happy and unhappy patches.
再打个比方， 如果你把这些社区网络想象成是 一大块人类的绸缎── 我与你相连，你和她相连，无止境地延伸── 这块绸缎就好像是 美国老实的被子一样， 上面是一块块的补丁，有快乐的补丁，也有不快乐的。