Unknown Unknownsby Donald RumsfeldAs we know,There are known knowns.There are things we know we know.We also knowThere are known unknowns.That is to sayWe know there are some thingsWe do not know.But there are also unknown unknowns,The ones we don't knowWe don't know.
Sunday, March 15, 2026
Unknown Unknowns by Donald Rumsfeld
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