McGlennon’s lecture delves into the historical roots and evolution of political polarization in the U.S., yet seems to overlook a crucial question: why are American voters so ‘smart’ that they prefer to affiliate with groups that resemble themselves rather than consider the national interest? His optimistic outlook may not have convinced all the listeners, especially the anxious students about the current political situation. Perhaps, what truly changes American politics is the awakening of the voters, not the scholars’ insights.