unknown unknowns

A one-minute clip of Donald Rumsfeld's 'known knowns, unknown unknowns' remarks at a Pentagon briefing.

A CNN clip from February 2002 of Donald Rumsfeld explaining the idea of known knowns, known unknowns, and unknown unknowns at a press briefing.

Slavoj Zizek discusses his book Violence in an Authors@Google talk in New York. He covers ideology, including his idea of the unknown knowns.

Nina Teicholz, author of The Big Fat Surprise, speaks at Low Carb Gold Coast 2017 about the history and health implications of vegetable and seed oils. She covers the political and institutional forces behind dietary fat advice.

A short clip from Anthony Bourdain's Parts Unknown in which he and chef Sean Brock end a long night of drinking at a Charleston Waffle House. It celebrates the unpretentious, welcoming late-night diner. Bourdain's remark comparing the meal favorably to the French Laundry is what people remember.

The first lecture of Jordan Peterson's 2017 Maps of Meaning course, setting out the Cold War context for his theory of belief and culture. He introduces the narrative structure of culture and archetypal characters for the individual, the known and the unknown.

A 37C3 talk by Kaspersky researchers on Operation Triangulation, a zero-click iPhone attack that targeted their own colleagues. They describe capturing every stage of the chain, four zero-days and a previously unknown spyware active for years.

PBS Space Time surveys five realistic options for interstellar travel, from conventional rocket fuel to antimatter and nuclear pulse propulsion. The options rely only on known physics.