9/11

An excerpt from the 1983 BBC series Fun to Imagine in which Richard Feynman describes how he and a mathematician friend counted in their heads in different ways, one verbally and one visually. It shows that people can reach the same goal through quite different mental methods.

Destin Sandlin of Smarter Every Day explains Multi-Domain Operations through footage from his last mission at RIMPAC 2018. He covers missile and torpedo testing and interviews military leaders about the cyber and information domains.

Charlie Rose interviews Sir James Goldsmith in 1994 about the coming GATT free-trade agreement. Goldsmith predicts that global capital mobility will upset the balance between capital and labor.

Ian Cutress interviews Mike Clark, AMD's chief architect of Zen, about his career since the K5, how Zen began and how CPUs are designed. It also covers the future of AMD.

Persi Diaconis explains on Numberphile the mathematics of card shuffling, including why seven riffle shuffles are needed to randomize a deck and how different shuffles compare.