On Sat, 29 Mar 2008, Ron Ritzman wrote:
More commonly the problems I've had have been over "reputable" sources which happened to be wrong.
I would think that they only way to show that something in a "reputable source" is "wrong" is to show a stronger "reputable source" that says it's wrong. Otherwise, it's "reputable source" vs "something I just know to be true".
I still remember the case where the sources say that a covered bridge is closed to traffic, and a guy visited it and it was open to traffic. That's a reliable source in any non-Wikipedia sense, but fails RS and V.