But here’s a question: Can we continue to trust ourselves? Are we prepared for the global, 24-7 fake news cage match that will dominate journalism in the twenty-first century? Let’s call it Factual Fantasy: Attack of the Ax-Grinding Insiders. The boundaries have vanished, the gloves are off, our opponents are legion and fueled with espresso. Both CNN and The New York Times were used by the U.S. military as unwitting co-conspirators in spreading false information, a tactic known as psychological operations, part of an effort to convince Americans the invasion of Iraq was a necessary piece of the war on terror.

But let’s not leave out the technology. Leaks may be the time-tested tactic for manipulating the press, but the new digital toolbox has given third-party players—government, industry, politicians, you name ’em—sleeker weapons and greater power to turn the authority of the press to their own ends: to disseminate propaganda, disinformation, advertising, politically strategic misinformation—to in effect use the media to distort reality. Besides a vast and sophisticated degree of diligence, the rising generation of journalists would be wise to observe two rules for working in this new environment: Beware of profiteers and hyper-patriots, and check out a little history—lest it repeat itself.

Fake news has been with us for a long time. Documented cases predate the modern media, reaching as far into the past as a bogus eighth century edict said to be the pope-friendly words of the Roman emperor Constantine. There are plenty of reports of forgeries and trickeries in British newspapers in the eighteenth century. But the actual term “fake news”—two delicious little darts of malice (and a headline-ready sneer if ever there was one)—seems to have arisen in late nineteenth century America, when a rush of emerging technologies intersected with newsgathering practices during a boom time for newspapers.

The impact of new technology is hard to overestimate. The telegraph was followed by trans-Atlantic and transcontinental cables, linotype, high-speed electric presses and halftone photo printing—wireless gave way to the telephone. The nation, doubled in population and literacy from Civil War days, demanded a constant supply of fresh news, so the media grew additional limbs as fast as it could. Newly minted news bureaus and press associations recruited boy and girl reporters from classified ads—“Reporting And Journalism Taught Free Of Charge”—and sent their cubs off to dig up hot stories, truth be damned, to sell to the dailies.

By the turn of the century, the preponderance of fakery was reaching disturbing proportions, according to the critic and journalist J.B. Montgomery-M’Govern. “Fake journalism,” he wrote in Arena, an influential monthly of the period, “is resorted to chiefly by news bureaus, press associations and organizations of that sort, which supply nearly all the metropolitan Sunday papers and many of the dailies with their most sensational ‘stories.’”

Montgomery-M’Govern delivers a taxonomy of fakers’ techniques, including the use of the “stand-for,” in which a reputable person agrees to an outrageous lie for the attendant free publicity; the “combine,” in which a group of reporters concoct and then verify a false story; the “fake libel” plant, in which editors are duped by conspirators into running false and litigious articles; the “alleged cable news” story, in which so-called “foreign reports,” dashed off in the newsroom or a downtown press association, are topped with a foreign dateline and published as truth. The editors of huge Sunday editions, with their big appetites for the juiciest stuff (what M-M calls “Sunday stories”) naturally set the bar lower for veracity than they did for hot-blooded emotional impact.

Robert Love is an adjunct professor at Columbia University's Graduate School of Journalism and the executive editor of Best Life.