The billionaire leaders of social media giants have long been under pressure to quell the spread of mis- and disinformation. No system to date, from human fact-checkers to automation, has satisfied critics on the left or the right. One novel approach winning plaudits recently has been Community Notes. The crowdsourced method, first introduced by Twitter before Elon Musk acquired it and rebranded it as X, allows regular users to submit additional context to posts, offering up supporting evidence...