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送交者: mito 于 2007-07-28, 14:43:38:
Donald Rumsfeld would have made a good US housing analyst. He once said about Iraq: “There are things we know we know. We also know there are known unknowns. . . 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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