Who’s going to be the first to tell Vauxhall’s 1,000 workers at Ellesmere Port that if they’d just be willing to show a bit more cheery optimism and believe hard enough, the threat of Brexit closure now hanging over their workplace will be magically lifted?

Certainly not Boris Johnson, who’s been trading in that sort of stuff to excitable reviews from certain parts of the media, which is delighting in the show put on by the PT Barnum of British politics and doesn’t much care about the consequences so long as the entertainment continues.