Rumsfeld : as we know, there are known knowns, there are

来源: kirn 于 2022-03-29 19:59:54 [] [博客] [旧帖] [给我悄悄话] 阅读数 : (358 bytes)

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.

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• 哈哈哈，你知道很多啊~~~ :) -雪晶- ♀ 给 雪晶 发送悄悄话 雪晶 的博客首页 (0 bytes) () 03/29/2022 postreply 20:34:47

• 我就知道扯，哈哈 -kirn- ♀ 给 kirn 发送悄悄话 kirn 的博客首页 (0 bytes) () 03/30/2022 postreply 06:35:39

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