Template:Unknowns

There are five types of known.

The Rumsfeld three:

• Known knowns: Things you do know you know;
• Known unknowns: Things you do know you don’t know;
• Unknown unknowns: Things you don’t know you don’t know;

And the Jolly Contrarian two:

• Unknown knowns: Things you don’t know you do know.
• Not officially known: Things that you do know but the general public can’t prove.