But the strongest explanatory variable for Parisian rudeness (and I’m aghast it’s taken me a decade to work this out) is Paris’s very perfection. If you overlay an intellectual capital on an artistic and fashion capital in a former royal capital, all of it in the country that invented how to eat, there are so many codes governing so many behaviours that the demands of sophistication become all-encompassing. No other city makes so many requirements. Every moment of their lives, even at family breakfast or in bed, Parisians must observe the rules that govern eating, talking, thinking, dressing, making love et cetera. There’s even a generally approved life-long pose: never seem surprised; bored is much better.