In his new book, Ezra Klein argues that polarization in America has become centered on partisan political identities, which has subsumed virtually every form of identity, be it where we live, what team we root for, the church we attend, or any other. This stacked form of polarization thus carries much more weight and...

When Reid Hoffman creates a handle for some new network or system, his usual choice is “Quixotic.” At an early age, his love of tabletop games inspired him to think of life as a heroic journey, where people come together in order to accomplish lofty things. This framing also prompted him to consider the rules and...