我为什么说利落有封闭的意思呢?
因为有好多事,我们不知道,有的时候,都不知道我们不知道,以下引用一句关于unknown unknown 的话,ramsfield说的,
Reports that say that something hasn't happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns—the ones we don't know we don't know. And if one looks throughout the history of our country and other free countries, it is the latter category that tend to be the difficult ones.