Monday, January 24, 2011

Known and Unknown

In his own words:
"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 that we know. There are known unknowns. That is to say, there are things that we now know we don't know. But there are also unknown unknowns. There are things we do not know we don't know."
Donald Rumsfeld

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