Nowadays, we know we don't know, but we just don't know what to think about all that stuff we know we don't know about what we know, let alone all the stuff we don't know we don't know. I mean like, you know...?
I don’t know what you think you know that you insist on saying you don’t know about, but if you knew as much as you think you know, you might know you know less than you really know.
Unless, of course, you know for sure that knowing something is often unknowledgable, in the knowable sense of the word, ya know?
Besides: Only The Shadow knows for sure....;o]