Twice recently I’ve been asked my opinion of ‘Doughnut Economics’. The first time, I was tempted to cover my ignorance with a Johnsonian impromptu riff on supply-chain issues in the deep-fried batter sector. But sensing seriousness I steered off and googled the phrase later, so I was ready the second time to discuss Kate Raworth’s 2018 book of that title, about why we should abandon pursuit of GDP growth in favour of a gentler model in which we take better care of nature and each other — illustrated by her ‘doughnut of social and planetary boundaries’.