HackerTube / Video
Donald Rumsfeld Unknown Unknowns !
Ali
A one-minute clip of Donald Rumsfeld's 'known knowns, unknown unknowns' remarks at a Pentagon briefing.
HN commenters cite it as the source of the known/unknown unknowns framing, sometimes noting he was unfairly ridiculed for it.
3 Hacker News mentions · 2015–2017