Donald Rumsfeld, and not knowing what you don't know and other oddities

In today's link, I present an article. Maybe not the shortest article, and I am not fully through it (there will eventually be five parts to the series. I am on number two.

But none of that matters when you consider the fascinating and kind of earth shattering overall message of series:

"If you don't know, you don't know that you don't know."

or

"If you are incompetent, you don't know that you are incompetent."

or as Rumsfeld said,

".....there are unknown unknowns. We don't know that we don't know." (it took me rereading that five times to grasp it)...

So in short, the smarter and more knowledgeable one becomes, they actually become more aware of their own shortcomings, and acknowledgement of parts of knowledge one does not know. But the more ignorant someone is in life, the more inability to admit error and admittance of lack of knowledge......