Marianne is a professional chess player who hums audibly while playing her matches, thereby distracting her opponents  When ordered by chess officials to cease humming or else be disqualified from professional chess, Marianne protested the order
She argued that since she was unaware of her humming, her humming was involuntary and that ttherefore she should not be held responsible for it
Of a player's actions, only those that are voluntary should be used as justification for disqualifying that player from professional chess.