demon core

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.

Grace Hopper appears on Letterman and uses a foot-long piece of wire to show how far light travels in a nanosecond.

A BBC Politics Live interview in which Andrew Neil presses conservative commentator Ben Shapiro on his past statements and an incident involving Corey Lewandowski and a reporter. It is a tense, widely shared exchange.

A 2018 VICE News Tonight interview with Apple CEO Tim Cook, in which he discusses privacy as a core company value, the Facebook breach, and Apple's iCloud arrangement in China.