It’s not often politicians admit to a change of heart. Perhaps it’s a trend that could – and should – catch on

In his new book, Changing My Mind, Julian Barnes writes: “We always believe changing our mind is an improvement, bringing a greater truthfulness to our dealings with the world and other people. It puts an end to vacillation, uncertainty, weak-mindedness. It seems to make us stronger and more mature.”

Well, maybe in literature, but not in politics, where changing your mind is akin to changing your underwear in public. Not a sign of strength, but a cause for embarrassment. There are few scenes of schadenfreude more keenly savoured in the political world than a dramatic U-turn, ideally with handbrake fully engaged and wheels loudly screeching.