I have many consultations on a weekly basis with a wide range of people on a multitude of issues.
One of the saddest, most frustrating types of consultation is when you meet a genuinely nice person who is convinced of something without an iota of evidence.
They are firmly committed to their viewpoint/opinion but there is not a particle of evidence to support it.
You want to help them, you want to believe them, you want to tell them they have a case.
But you can’t because the evidence does not exist. They have formed this apparently irrational opinion and you want to be on their side. But you must do your job and tell them straight and plain.
You have no case because you have no evidence. A hunch or opinion or belief is not enough to ground a winning case.