Stubbornness in the face of Truth is no virtue. Knowingly or not, students gain versatility in the case discussion process. Satchel Paige was one of the greatest pitchers in baseball history. We must combine the toughness of the serpent and the tenderness of the dove, a tough mind and a tender heart. Toughmindedness is certainly one of the hallmarks of practical business people.
Case analysis builds toughmindedness.
But toughmindedness is not the same as toughheartedness. One needs to cultivate the ability to present toughminded perspectives in respectful ways, otherwise dialogue breaks down, and potential for learning disappears. Maintaining a tough mind and a tender heart in case discussion requires enormous self-discipline. Don't find fault. Find a remedy.