. . . except for the rare story of which you happen to have firsthand knowledge

Michael Crichton referred to the Gell-Mann Amnesia Effect which he described.

Briefly stated, the Gell-Mann Amnesia effect is as follows. You open the newspaper to an article on some subject you know well. In Murray's case, physics. In mine, show business. You read the article and see the journalist has absolutely no understanding of either the facts or the issues. Often, the article is so wrong it actually presents the story backward—reversing cause and effect. I call these the "wet streets cause rain" stories. Paper's full of them.
In any case, you read with exasperation or amusement the multiple errors in a story, and then turn the page to national or international affairs, and read as if the rest of the newspaper was somehow more accurate about Palestine than the baloney you just read. You turn the page, and forget what you know.

There is an irony laden inversion of, and probably progenitor to, Crichton's observation. This was coined by Erwin Knoll, editor of "The Progressive"

Knoll's Law of Media Accuracy: Everything you read in the newspapers is absolutely true--except for the rare story of which you happen to have firsthand knowledge.