The world is spending nowhere near enough on a coronavirus vaccine

CONSIDER THEThe Economist Today following thought experiment. If you fail to eat a pizza within an hour, you will die from hunger. What do you do? Most people would immediately order a pizza—and not just one Margherita, but lots of them, from several different parlours. In order to maximise the chances that at least one pizzeria got you what you needed in time, you would not care that some of the pizza would be sure to go to waste.