In fairness, that’s less than one editor per serious factual error:
THE TIMES published an especially embarrassing correction on July 22, fixing seven errors in a single article — an appraisal of Walter Cronkite, the CBS anchorman famed for his meticulous reporting. The newspaper had wrong dates for historic events; gave incorrect information about Cronkite’s work, his colleagues and his program’s ratings; misstated the name of a news agency, and misspelled the name of a satellite.[….]
Five editors read the article at different times, but none subjected it to rigorous fact-checking, even after catching two other errors in it. And three editors combined to cause one of the errors themselves.
I wish the five editors who proof the posts here caught more of my errors too. Maybe I should be grateful they’re not combining to create new errors.