Bill,
First of all, I have some openings for my next poker dealer course...drop me a line if your interested.

I'm glad that both you and Mike selected the same example (Phil Ivey's screw-up)https://www.youtube.com/watch?v=6OzlLQUNU8c
Before I even get into Phil Ivey, I want to point out that your mention of Robert's Rules is strictly for cash games. We need to know the difference. In a cash game, I don't care if a player overlooks his winning hand...that's part of the game. It should not be a part of tournament poker. The time for a player to misread his hand is during a betting round...facing a bet and folds, a simple mistake. However, once that player has reached the showdown he should never lose if holding the best hand!
Back to Phil Ivey...I have some questions for you: How far did the player Ivey faced advance?
How would you like being eliminated by that player later in the tournament, because he had more chips than he should have? It's happened too many times to count on youtube videos I've watched.
How do you know that Phil didn't intentionally dump his chips?
How would you feel if: you were on the bubble and could have moved into the money, if the correct player got the pot?
I could continue but if you don't understand where I'm going, I'm wasting everyone's time.
Mike and Bill, please take a look at this one and tell me this is acceptable:
https://www.youtube.com/watch?v=_n-FWeY7avw