Donald Trump is crashing the system. Journalists need to build a new one.

[Commentary] Journalists commonly divide information from persuasion, as when they separate the “news” from the “opinion” section, or “reporters” from “columnists.” This is fine as far as it goes (and they get criticized harshly when they don’t honor this norm), but the distinction won’t help much in understanding why the 2016 campaign has been such an intellectual challenge for the media. Everything that happens in election coverage is premised on a kind of opinion: that our votes should be based on reliable information about what the candidates intend to do if elected. Remove that assumption and the edifice crashes. But this is exactly what the candidacy of Donald Trump does. It upends the assumptions required for the traditional forms of campaign journalism even to make sense.

Journalists may need to collaborate across news brands in ways they have never known. They may have to call Trump out with a forcefulness unseen before. They may have to risk the breakdown of decorum in interviews and endure excruciating awkwardness. Hardest of all, they will have to explain to the public that Trump is a special case, and the normal rules do not apply.

[Jay Rosen teaches journalism at New York University and writes the blog PressThink.]