One thing that I agree with is the two or more witness principle.
I have an experience to tell why.
At work for lunch I go to my car and eat and read emails on my laptop (since I can't bring my laptop in). One day a HR director and my director told me about an occasion where I was in my car and a woman went out to her car that was next to me and left for lunch. She came back and pulled in a spot and saw that I was in my car to the left of her and what came to her mind was that I must have just pulled in after her and she felt uncomfortable with that and thinking that I was following her and she went to security. The fact was that I never left and she pulled in the same spot that she left and saw me still there and could not imagine that I was in my car when she left and was still in my car 20 or so minutes later when she pulled in the same spot. So she immediately thought something bad. I told them that security should have video of the parking lot, look at that and you will see that I didn't go anywhere. The two witness principle is good because people jump to the craziest conclusion because they can't conceive the truth and others listen to accusations more than the accused.