The head of the wider US intelligence community apparently felt it would not be possible for Gen Petraeus to discipline CIA staff accused of marital indiscretions, if he had shown himself fallible in the same regard.

BBC: Petraeus' downfall - a modern morality tale

The Swedish judges at the presentation ceremony were a touch hurt to hear that artificial intelligence had been his central interest, rather than economics, although of course he was interested in that discipline too.

ECONOMIST: Herbert Simon