Book Publishing, Not Fact-Checking
"A lot of readers have the perception that when something arrives as a book, it's gone through a more rigorous fact-checking process than a magazine or a newspaper or a website, and that's simply not that case," Silverman said. He attributes this in part to the physical nature of a book: Its ink and weight imbue it with a sense of significance unlike that of other mediums.
Fact-checking dates back to the founding of Time in 1923, and has a strong tradition at places like Mother Jones and The New Yorker. But it's becoming less and less common