On the night of the local elections the leader of the opposition, Jeremy Corbyn, went to make a speech in a pub that appeared to have a Cuban communist theme. He was filmed there, beneath the pictures of Che and Fidel, holding forth to the kind of people who still go to Cuban-themed pubs.

The next day the film-makers interviewed him. “I am not a traditional party leader,” he told them. “I do things in a rather different way.” And then added: “Some people are slower at learning things than others.”

Are they not? I cannot find a phrase for the telling of an inadvertent truth that everyone else but the teller can see while trying to say the opposite, but perhaps a “Jeremyad” will