Despite the warnings of politicians and health-care professionals, many have failed to treat the coronavirus pandemic as a serious threat: the spring breakers on beaches, the crowds in city parks. Daniel Kahneman, a Nobel Prize-winning expert on human behavior, speaks with Maria Konnikova about why the threat posed by COVID-19 defies intuitive comprehension. “There should be clear guidelines and clear instructions. We all ought to know whether we should open our Amazon packages outside the door or bring them in,” Kahneman said. “It’s not a decision individuals should consider making on the basis of what they know, because they don’t know enough to make it.” Plus: the story of a nine-hour virtual party that attracted hundreds of thousands of attendees—including Rihanna, Bernie Sanders, Joe Biden, and Drake.