You savvy?
“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.”
~ US Defense Secretary Donald Rumsfeld was awarded the “Foot in Mouth” prize by Britain’s Plain English Campaign for the aforesaid comment.