[billorites]

There are known knowns; there are things we know that we know.
There are known unknowns; that is to say there are things that, we now know we don't know.
But there are also unknown unknowns – there are things we do not know we don't know.

[Perseverando]

But there are also unknown unknowns – there are things we do not know we don’t know.

Inquiring minds have to know. You know?

[fabian]

tha is funny...he was so good at dealing with the press though...that I do know!

[Smokin' Joe]

There are known knowns; there are things we know that we know. There are known unknowns; that is to say there are things that, we now know we don't know. But there are also unknown unknowns – there are things we do not know we don't know.

And then there are the no-nos we know and the no-nos we don't know,