Thursday, October 25, 2012

Known knowns (ЮМОР)

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.
(c) US defence secretary Donald Rumsfeld

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