History is a strange medium: it carries the most contemporary debates onto the most distant terrain. Both Bruce Mann and David Konig focus on the notions of change and context that undergird the forum essays. Those issues, more than any moment in early New York, link the articles and the comments. By exploring the way we defined “constitutions,” “constitutionalism,” and “constitutional history,” the commentators open up a large and current question. They invite a discussion about approaches to constitutional change.