Not just truth and accuracy, humans have an innate need to belong. We all need to fit in, bond with others, and earn the respect and approval of our peers.
Understanding the truth of a situation is important, but so is remaining part of a tribe. While these two desires often work well together, they occasionally come into conflict.
And this means, sometimes we don’t always believe things because they are correct. Sometimes we believe things because they make us look good to the people we care about.
This is the “actually false, but socially accurate” approach. False beliefs can be useful in a social sense, even if they are not useful in a factual sense.