These are things that we know we know
These are things that we know that we do not know
These are things that we don’t know we don’t know
The entire statement, who said this and what does it all mean?
The entire statement and who said it:
“There are known knowns. These 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. These are things we do not know we don’t know.”
United States Secretary of Defense Donald Rumsfeld
The video of Donald Rumsfeld’s famous speech about known unknowns and unknown unknowns
At a press briefing on February 12th, 2002, former US Defense Secretary made this statement relating to the absence of evidence in linking the Iraqi government to it’s alleged possession of weapons of mass destruction. At the time this statement was criticized as an abuse of language but later on defended for it’s profound and almost philosophical truth.
Rumsfeld’s defenders chimed in
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Since then there have been humorous spoofs of Rumsfeld’s quote. For example, The Boondocks series made a funny episode with known unknowns speach.
The Boondocks Known Unknowns parody video
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