Justine Greening is MP for Putney, and a former Secretary of State for Transport. Zac Goldsmith is MP for Richmond Park.
No-one is ever more certain of a prevailing wisdom than the day before it’s proved wrong. When something’s apparently so obviously true then people stop looking at the detail. And when someone challenges that wisdom and suggests its wrong, then that’s not welcome news because it’s just easier to take comfort that everything is still all fine.