There's an interesting observation in the field of mechanism design that says when any ordering of preferences if possible (that is, it is possible for somethin

There's an interesting observation in the field of mechanism design that says when any ordering of preferences if possible (that is, it is possible for something like agent X thinks A>B>C and agent Y thinks A>C>B and agent Z thinks C>B>A to happen) the only "truthful" mechanism is dictatorial. Otherwise it is always possible to game the system by voting for outcomes you don't really like as much but you think more other people will like.