Elon Musk told Kara Swisher that he would “not take a Covid-19 vaccine when one becomes available, and declined to say whether he feels a duty to pay employees who want to stay home to avoid contracting the virus. ‘I’m not at risk for Covid, nor are my kids.'” Even if that were true, the point of being careful – even if you’re relatively young and healthy – is to avoid spreading it to others who it will kill. It’s endlessly remarkable that some people can’t understand this simple fact.