This is an interesting article about scientists analysing how statements can be made to seem more true than they actually are.

Truthiness, Merriam-Webster’s 2006 word of the year, is “the quality of seeming to be true according to one’s intuition…without regard to logic [or] factual evidence.” … The research finds that a statement in the presence of images or other additional information enhances people’s feelings of truthiness, even when they don’t provide any evidence the statement is true.

Scientists Dissect The Psychology Of ‘Truthiness’ via Scientific American