players may wonder what is the purpose of using a different tile as the joker for each game. It would seem to be logically equivalent to use the false jokers as jokers and every tile to be what it appears to be. A possible reason may be that if through any defect in the tiles, some players learn to recognise the false jokers from the back, that would give them an unfair advantage. If a different tile is used as the joker in each game, recognising a joker from the back becomes much more difficult.