People like this cannot be reasoned with. It's like trying to reason with Marxists. It can't be done. To reason, you must think for yourself. You cannot let dead people think for you and simultaneously think for yourself.
Unscrupulous deceivers prey on such gullibility for both fun and profit.
With those dramatic words, President John F. Kennedy supposedly intended to inform the American public and the world at large that the U.S. government had made contact with aliens from deep space. Even though the story originated in the Weekly World News , it has nevertheless spread like a virus through vulnerable segments of the Internet user population, and even beyond. It is not at all implausible that such a claim be made. Far weirder claims have been made, and believed. The Warren Commission case hangs on a single element, that a single bullet made two near right angle turns in mid-air, pierced flesh and bone five times and ended up on a gurney in near pristine condition.