When I was young and pretentious (or more pretentious than now), I used to think glumness was a mark of virtue. If friends were guffawing at a boorish joke I’d affect a cool stance of moral superiority. If people were getting carried away over a match I’d mutter something supercilious about sport being opium for the masses.Chin-stroking, humourless detachment was the right sort of posture to adopt when faced with popular entertainment. So I had been taught by fashionable intellectuals like Karl Marx, Friedrich Nietzsche and above all Noam Chomsky, that high priest of anti-establishmentarianism who would have us believe...