Mr Jordan's solution is a judicious mixture of chronological and thematic sections, looking at large regions, and hopping from one idea to the next as suitable cues present themselves.

ECONOMIST: Medieval history

No doubt Mr Mortier's festival could do with a spot of judicious pruning.

ECONOMIST: What to wear for Salzburg

But Mr Gerster's political awkwardness also made it easy for his foes, by judicious leaking, to build a media campaign against him.

ECONOMIST: Fall-out from the sacking of a labour-agency head