The webinar speakers described how the initiative brought together hundreds of ideologically, philosophically, and demographically diverse historians, political scientists, and educators. The project required multiple task forces and working groups, each one grappling with a key design challenge. Together, the collaborators learned to approach disagreement and controversy as an opportunity for learning rather than as a problem to be overcome and, in doing so, they achieved much greater consensus than they had anticipated. The creative tension that resulted from conflicting priorities and perspectives was productively harnessed, leading to energetic debate, new perspectives, and alternative approaches that would not otherwise have been developed. The presenters shared their experience and thoughts about how the lessons they learned may be applied to HIBAR research challenges in other fields.