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The term unknown unknown refers to a statement by United States Secretary of Defence Donald Rumsfeld in 2002.
The following statement was made by Donald Rumsfeld at the Defense Department Briefing on February 12,2002:
| “ | 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. | ” |
This statement is an accurate transcription based on the video of the original press briefing. The Department of Defense transcript is inaccurate and lacks the same poetic quality as the original quote.
