At its most fundamental, information is a binary choice. In other words, a single bit of information is one yes-or-no choice.
James Gleick"Half genius and half buffoon," Freeman Dyson ... wrote. ... [Richard] Feynman struck him as uproariously American-unbuttoned and burning with physical energy. It took him a while to realize how obsessively his new friend was tunneling into the very bedrock of modern science.
James Gleick