It’s a common impulse, although less common than it used to be. The news audience has been chopped up into ideological camps, and CNN’s middle way has been clobbered in the ratings. The legacy networks’ news divisions can still flex powerful muscles on big stories, and Twitter and other real-time social media sites have seduced a whole new cohort of news consumers.

But the biggest damage to CNN has been self-inflicted — never more so than in June, when in a rush to be first, it came running out of the Supreme Court saying that President Obama’s health care law had been overturned. It was a hugely embarrassing error.

Still, when big news breaks, we instinctively look to CNN. We want CNN to be good, to be worthy of its moment. That impulse took a beating last week. On Wednesday at 1:45 p.m., the correspondent John King reported that a suspect had been arrested. It was a big scoop that turned out to be false.

Mr. King, a good reporter in possession of a bad set of facts, was joined by The Associated Press, Fox News, The Boston Globe and others, but the stumble could not have come at a worse time for CNN. When viewers arrived in droves — the audience tripled to 1.05 million, from 365,000 the week before, according to Nielsen ratings supplied by Horizon Media — CNN failed in its core mission.

It was not the worst mistake of the week — The New York Post all but fingered two innocent men in a front-page picture — but it was a signature error for a live news channel.

CNN has been in the middle of a rehabilitation ever since Jeff Zucker was appointed at the end of last year to run CNN Worldwide. Until now, the defining story in the Zucker era had been a doomed cruise ship that lost power and was towed to port, where its beleaguered passengers dispersed. This week, CNN seemed a lot like that ship.

It’s clear after a busy week that Mr. Zucker can hire all the talent he wants, broaden the scope of their coverage and freshen the look of the joint, but if the network continues to whiff on the big stories, all of that will be for naught. Two people I spoke to at the network, which featured a lot of good work and tireless reporting when it wasn’t getting it wrong, called the error “devastating.”

Twitter and commentators vibrated with umbrage — “Breaking News Is Broken” suggested a headline on Slate — all asking some version of how can this keep happening.

Here’s how: As a general practice, wall-to-wall live television reporting is perilous. Maybe instead of the constant images of police tape, television news should frame their own coverage with a virtual version, indicating that viewers proceed at their own risk.

Despite the suggestion otherwise, people who are on the air talking about the news cannot report while they are doing it. Producers make hundreds of decisions on the fly. The incrementalism and vamping required to fill the hours — “Again, as we have been saying, Anderson … ” — makes everyone desperate to say anything vaguely new.

Throughout the week, I saw anchors and reporters staring at their phones, hoping a new nugget might arrive to give them something to say. (Memo to television executives everywhere: news is a better product when presenters look at the camera.) And the live environment means that at a certain point, the bosses have to quit shouting into the ear piece, trusting their staff and crossing their fingers.

Several people involved in reporting the Boston bombing case said the story presented particular challenges. In a large-scale assault on public safety, the audience wants to know everything, right this second. Yes, they want you to be accurate, but the implicit promise of a 24-hour news service is that it will happen quickly.

The pressure to produce is ratcheted up accordingly. Editors and producers begin leaning on their reporters, and they, in turn, end up in the business of wish fulfillment, working hard to satisfy their audience, and meeting the expectations of their bosses. It creates a system in which bad reporting can thrive and dominoes can quickly fall the wrong way.

In the instance of the Boston story, the scope of the crime, the number of victims and the fact that it smacked of terror on American shores provoked a vast law enforcement response at the federal and local level. A multiagency array of command centers and responsibilities created a target-rich environment for reporters. But it also created an unwieldy patchwork of sources, all operating in the fog of war, albeit a domestic one.

E-mail: carr@nytimes.com;

twitter.com/carr2n

Article source: http://www.nytimes.com/2013/04/22/business/media/in-boston-cnn-stumbles-in-rush-to-break-news.html?partner=rss&emc=rss