- Oct 26, 2000
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?Reports that say something hasn?t happened are interesting to me, because as we know, there are known unknowns; there are things we know we know,? Rumsfeld told the briefing. ?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.?
