Unknown unknowns
During a press briefing in 2002, Donald Rumsfeld (Class of 1954 ? a fact I would assume is not often brought up during Orange Key tours) spoke more like a professor of epistemology than a secretary of defense when he ruminated on the subject of ?unknown unknowns.? According to Rumsfeld, there are ?known knowns,? things we know we know, and ?known unknowns,? things we know we don?t know, but also ?unknown unknowns,? things we don?t know we don?t know.




