David Collantes

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Unknown Unknowns

It is all about the unknown unknowns, of course!

“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.”

Donald Rumsfeld, DoD News briefing.

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