MAPES: Bill, in all kinds of journalistic issues in the past, reporters have gone with things they believed but they could not prove with DNA testing. They have done that. I mean...
O'REILLY: DNA testing?
MAPES: Well, that's what the equivalent, the ink testing or something like that, which really would prove that the documents had been typed in 1972 or whatever. But by your standard, that wouldn't have been enough either.
O'REILLY: Listen, I've been doing investigative reporting for almost 30 years. I've never lost a lawsuit. But I've never put anything on the air I couldn't prove.
There's an entire Chris Buckley novel in that exchange.