Ancient Geographers and "Known Unknowns"

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“Reports that say that something hasn’t happened are always interesting to me, because as we know, there are known knowns; there are things we know we know. We also know there are known unknowns; that is to say we know there are some things we do not know. But there are also unknown unknowns — the ones we don’t know we don’t know.”  (Donald Rumsfeld, former Secretary of Defense)

With the news of the former Secretary of Defense’s new book appearing, entitled Known and Unknown, I was instantly reminded of the quote above. Many in the media at the time believed that this just added to a growing mountain of funny Rumsfeld quips.  I was also reminded, however, of a talk I gave here at the Library 2 weeks ago for CNU’s Latin Day to a group of young Latin students from around Hampton Roads.    Read more