There's suddenly a lot of interest in Tory circles in the work of
Daniel Kahneman, the Nobel prize-winning psychologist and behaviouralist. They are attracted to the professor's thesis about how people recall difficult periods in their lives: they disproportionately remember, and therefore place the greatest weight, on how a harrowing episode came to an end. The contention is that even a deeply grim crisis can be thought of positively if the conclusion to it is an uplifting one.
Tory strategists are calculating that this is a trait of human nature that can be exploited to their party's benefit. They reckon that a successful vaccination programme will induce voters to forget the government's contribution to all the distress and death that came before it. The challenge for the Tories' opponents will be stopping Boris Johnson from getting away with this.