Intellectual historians have never really abandoned the GreatMan theory of history. They often write as if all important ideas in agiven age can be traced back to one or other extraordinary individual– whether Plato, Confucius, Adam Smith or Karl Marx – rather thanseeing such authors’ writings as particularly brilliant interventions indebates that were already going on in taverns or dinner parties orpublic gardens (or, for that matter, lecture rooms), but whichotherwise might never have been written down