Why does this remind me of a soccer team?? The "elders" sacrificing their awesomeness to score a goal, the midfield to push it back up, defense for protection, the goalie to help when in dangerous need. 😁😁
Person C knows his had is black, because if it was white, Person D would have seen two white hats and said his color ;D The best riddle I've ever heard. (I'll post answer in comment section if everyone gives up).