UzzyLady (et al): If you could be convinced that there was no collusion, the progression of the sophistication on the bidding would make an interesting PhD study into the dynamics of human adaption in a (semi-)closed environment.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)