Agreement can always be reached by increasing the generality of the conclusion; when this is done, the form is generally preserved but only the illusion of policy is created.
DONALD RUMSFELD
There are no “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.
