Welcome to our Debate issue. This issue explores the role of debates, ones that have taken place as well as ones that should take place. How are these debates constructive exchanges of opposing positions? What are the topics of those impassioned discussions? What are the issues at stake? What are the venues, physical or virtual, historic or current, in which these debates take place? What conditions favor the generation of these debates? Who participates in these debates, who is the audience, and who should be the audience? And ultimately, what are the outcomes of these debates? We hope you take part of the debate.