Known knowns and known unkowns (Rumsfeld)

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This item was added by boyishprince on August 23, 2008

Description: 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. ( Edited by boyishprince)

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