Donald Rumsfeld Unknown Unknowns !

Why it was recommended

He was ridiculed for talking about

Referenceaero142 · Original2015-03

What it covers

A one-minute clip of Donald Rumsfeld's 'known knowns, unknown unknowns' remarks at a Pentagon briefing. It is for a general viewer who does not plan to take a prerequisite first.

Video details

Channel

Ali

Length

35 sec

Year

2009

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