When the social media platform X (formerly Twitter) invited users to flag false or misleading posts, critics initially scoffed. How could the same public that spreads misinformation be trusted to correct it? But a recent study by researchers from the University of Rochester, the University of Illinois Urbana–Champaign, and the University of Virginia finds that “crowdchecking” (X’s collaborative fact-checking experiment known as Community Notes) actually works.


