Know how much you don't know.

[magicguido]

qWacKers suffer from this

[dchill]

1. Excellent. But what do I know?

[StClone]

4. I knew that!

[keithbvadu2]

2. Donald Rumsfeld

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.

https://en.wikipedia.org/wiki/There_are_known_knowns

[erronis]

3. And then there the totally alternate universes that Rumsfeld, repuglicons and neo's construct.

So many wasted brain cells. Wish darwin would hurry up!

[twodogsbarking]

5. Bill Withers Effect

And I know, I know, I know, I know
I know, I know, I know, I know, I know
I know, I know, I know, I know, I know
I know, I know, I know, I know, I know
I know, I know, I know, I know, I know
I know, I know
Hey I oughta leave young thing alone
But ain't no sunshine when she's gone, woh woh