Donald Rumsfeld, expanding on Socrates’ statement, “The only true wisdom is in knowing you know nothing,” pedantically states in the year 2002 that, “There are known knowns—things we know that we know. There are known unknowns—things we know we don’t know. But there are also unknown unknowns—things we don’t know we don’t know.“

Which suggests that we all are pre-ordained to a life of study to shorten the list of unknowns and the embarrassment of being unprepared.

G.K. Chesterton anticipating that a lifetime, or something less than a lifetime of study has its dangers, warned in his 1908 collection of essays, “All Things Considered,” “Without education, we are in a horrible and deadly danger of taking educated people seriously.” Implying that a myopic education may allow for mastering a single subject but is ill-equipped to understand anything broader; unable to see the forest for the trees.

Which leads us to the 1973 “Magnum Force” with Clint Eastwood, wielding a Smith and Wesson Model 29 .44 magnum in a Dirty Harry hand, explaining to an unfortunate soul that “A man’s got to know his limitations,” highlighting the concept of epistemic humility: the recognition that one’s knowledge and understanding is always limited and to proceed accordingly.

Source: Socrates. G.K. Chesterton. Socratic-Method.com.  Graphic: Magnum Force poster, copyright Warner Bros.