“A student asked if we could imagine a world where Boris Johnson announced a shortage of petrol (or toilet roll, or dried pasta - name whatever limited resource you like) and, instead of immediately triggering panic buying, the announcement is greeted by a wave of collective reason. I will only buy the limited good if I really need it now, understanding that others may need this now limited resource more than I do. Perhaps usually I fill up my car whenever it hits the final quarter of a tank? Now I know there is not enough fuel to go around maybe I’ll wait until I’m closer to empty? That sort of thing…“