I’ve seen this argument somewhere before
Pharyngula 2014-01-24
Summary:
I think they ripped it off from a theology textbook, simply changing the name of the mystery in question: You Can't Prove There's No Cannibal Rat Ship. Except, of course, there is a possibility that the Cannibal Rat Ship exists, and there are at least verifiable records that a ship called the Lyubov Orlova once …