Familiarity is not easily distinguished from truth
Authoritarian regimes and marketers have always known that exposure to a concept is directly correlated to the willingness of people to believe it.
A reliable way to make people believe in falsehoods is frequent repetition, because familiarity is not easily distinguished from truth. … If you cannot remember the source of a statement, and have no way to relate it to other things you know, you have no option but to go with the sense of cognitive ease.[1]
See also:
Thinking, Fast and Slow – Kahneman (2013), ch. 5 § “Illustions of Truth.” ↩︎