Which makes America exceptional in a curious new way. Instead of the Puritans’ shining city upon a hill, a newly invented model society to which the rest of the world should aspire, we’ve become a warts-and-all model of the messy, mistrustful rest of the whole world—split between cosmopolitan seculars and tribal fundamentalists, between educated people hopeful about possible futures and others desperate to return to some dreamy past.