Quartz: “The techniques of propagandists work for good reason. Studies show that the more often we hear a statement, the more likely we are to believe it is true—regardless of the underlying facts.Tom Stafford, a professor of psychology and cognitive science at the University of Sheffield and author of For argument’s sake: Evidence that reason can change minds, wrote in the BBC that the “illusion of truth” is created from frequently hearing a statement repeated. Stafford points to a 2015 Vanderbilt University study showing that this illusion works even when the person hearing the statement is aware of a contradictory fact.”

“Any universe where truth gets repeated more often than lies, even if only 51% vs 49% will be one where this is a quick and dirty rule for judging facts” [Tom Stafford, a professor of psychology and cognitive science at the University of Sheffield]