The vast network moving food from farm to fork has shifted gears mightily in response to covid-19. But some will still go hungry; governments must resist the urge to crimp exports. Inflation statistics are often tallied in store aisles and at restaurant tables; how to gather those data now? And why being a warm-up act is cold comfort for many bands. For full access to print, digital and audio editions of The Economist, subscribe here www.economist.com/radiooffer