HUBRIS: “The president’s friend and adviser Valerie Jarrett sometimes pointed out that not only had he never managed an operation, he’d never really had a nine-to-five job in his life. Obama didn’t know what he didn’t know, yet his self-confidence was so stratospheric that once, in the context of thinking about Emanuel’s replacement, he remarked in all seriousness, ‘You know, I’d make a good chief of staff.’”

UPDATE: Reader John Potter sees the Dunning-Kruger effect in action.