
In On Liberty, John Stuart Mill wrote, "he who knows only his own side of the case knows little of that." He was laying out the case for robust, good-faith, and systematic debate as essential to an open society. If you don't test your beliefs by engaging with people who disagree with you, you're more likely to make weak, incomplete, self-serving, or irrelevant arguments, leading to ruinous outcomes in policy matters or acrimonious misunderstandings in social life.
That's where the group Open to Debate comes in. Founded in 2006 as Intelligence Squared U.S., Open to Debate has hosted hundreds of debates with the goal of "restor[ing] critical thinking, facts, reason, and civility to American public discourse." Through a mix of online and in-person events, Open to Debate brings together artists, officials, public intellectuals, scientists, and entrepreneurs from across the ideological spectrum to work through contentious, heated, and seemingly irresolvable issues of the day.