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 know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
Read more at http://www.brainyquote.com/quotes/quotes/d/do...Hzk9pkc.99
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 know we don't know. But there are also unknown unknowns. There are things we don't know we don't know.
Read more at http://www.brainyquote.com/quotes/quotes/d/do...Hzk9pkc.99
How True, when it comes to DUTV Donald Rumsfeld certainly said it best.
"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."
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