We are poor judges of other people. We like to believe the most innocent of explanations. We "default to truth " even when it carries terrible risks.
We believe some one not because we don't have doubts, but because we don't have enough doubts to disbelieve and can't explain.
Some very interesting perspectives on human behaviour by Malcolm Gladwell in his book " Talking to Strangers: What we should know about the people we don’t know" (2019).
What really hit me were the lines "People who are victims of betrayal need our #empathy,not censure "