I was at the Chesapeake Regional this past weekend and a human player managed to throw a piece of litter and it went into one of the recycling cans located on the step.
Also the number one ranked team was a team from Israel and a human player managed to throw a piece of litter into their robot making them unable to operate for the rest of the match.
Also side note my team has made bets with me on weather or not I can knock down a stack with a noodle.
