By Bill Kirtz

As media analysts dissect the latest example of fabrication presented as fact, top narrative writers agree that nothing — however creative the writing process — can be made up.

Their comments came at last weekend’s Narrative Arc conference hosted by Boston University’s School of Journalism and co-sponsored by the Poynter Institute.

Conference organizer and BU journalism professor Mark Kramer, author of several non-fiction books and editor of “Telling True Stories,” said that as narrative journalism has developed into a genre, standards have gotten tighter. His often-repeated rules: make nothing up, no “tweaking” time sequences and be straight with sources.

When memoirists and others violate these standards, he added, they hurt the credibility of all non-fiction practitioners.

“An accumulation of bad examples has moved me from skepticism to cynicism about memoirs,” said Roy Peter Clark, a Poynter senior scholar and prominent writing coach and author. He and other speakers said non-fiction writers should spell out their techniques at the outset.

“Creative non-fiction is not a license to steal,” said Mitchell Zukoff, a BU journalism professor whose most recent book is “Lost in Shangri-La.” “Anything between quotes has to be what someone actually said.”

Zukoff acknowledges that in probing into long-past events, there are things you simply can’t know for certain. But you can describe a centuries-old figure by writing something like “paintings of the time show him with thick, wavy hair.”

Adam Hochschild, whose most book of historical non-fiction is “To End All Wars,” will reconstruct events but insists that everything “has to be true.” To bring the past to life, he focuses on scenes. “I try to think like a filmmaker. Where do I put my camera?”

Instead of interviewing someone, Hochschild advises reporters to follow them around and see how they interact with others.

Tom French, a Pulitzer Prize-winning feature writer and Poynter writing fellow, made a similar point. Before you start — and even on deadline — think about whose experience is most important. Figure out which character in your story has the most at stake. In a story about a proposed ban on lap-dancing, for example, a St. Petersburg Times reporter accompanied the dancers to the hearing. Rather than simply quoting politicians, they got such detail as body glitter and the dancers on city council chairs.

“Open strong and build to better,” French urged. Contrary to standard beliefs, he said the lede is the second most important part of a story. The ending is the most important. So he said a reporter should ask herself: what do you want the reader to remember most?

French said stories can come alive when they shift between opposites: in an Occupy story, alternating a protester and a shop owner’s points of view; long and short sentences, external and internal action.

How to spark such vivid writing? Jan Winburn, a well-known newspaper editor and writing coach now senior editor for enterprise at CNN.com, said reporters need editors with “infectious enthusiasm” who will encourage them with “tell me more” comments. She said editors should be good listeners, letting writers test ideas by saying them out loud.

“Stay surprisable,” she said. “You want the writer to find out what the story is, not what you think the story is.”

As Winburn helps bring long-form storytelling to a website known for breaking news, two multimedia editors detailed their experience blending narrative and visual elements.

Christian Science Monitor senior editor Clara Germani supervised an award-winning project that followed a Congolese third-grader and his family for a school year in Atlanta.

The series, which has 33 multi-media elements, won acclaim. But Germani said, “Multi-media on the Web doesn’t pay.” Reporter Mary Wiltenburg got a small monthly stipend and received two Pulitzer Center grants to go to Tanzania, while Germani had to handle the project besides her regular job supervising in-depth stories.

Amy O’Leary, a reporter in the “How We Live” group at the New York Times, has found that throwing too many elements into a series can produce confusion. She said “The Debt Trap” lost the audience because the story was too complex for the format, she said.

The Times had better results with “Flipped.” Showing how private equity dealmakers win while their companies lose, The Times implanted a narrative question early in the piece to make viewers and readers curious. “We kept it simple, limited choices and gave people the incentive to keep on,” O’Leary said.

Surveying the multi-media universe, Dean Starkman wrote a much-discussed Columbia Journalism Review article urging publishers to give staffers the time and space to do what he considers journalism’s core duty, public interest reporting.

In a keynote talk at the BU conference, Starkman, part of a Pulitzer-winning investigative reporting team and managing editor of CJR’s business press section, described “a hole in the peer-produced [amateurs doing professional work] model for news: there’s no way to produce great stories.”

To Starkman, authorship is needed: In his book “Here Comes Everybody,” New York University professor and prominent new media commentator Clay Shirky sees great promise in crowdsourcing and collaborative media efforts. But Starkman notes that “Here Comes Everybody” wasn’t written by everybody but by one person.

Saying the muckrakers of a century ago should still challenge us, Starkman believes their “towering ambition is missing today. We have to hang on to [their] values: going after huge targets without fear.”

Starkman doesn’t see the need for the journalism industry to make a stark choice between professional reporting for many and netcitizens providing information for each other.

“The two cultures have to come together, and if they do there’s amazing potential,” he said.

Bill Kirtz is an associate professor of journalism at Northeastern University in Boston.