五千年(敝帚自珍)

主题:人艰不拆讲笑话之五 2021年新楼 -- 骨头龙

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家园 有没有证据重要吗?

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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有趣有益,互惠互利;开阔视野,博采众长。
虚拟的网络,真实的人。天南地北客,相逢皆朋友

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