Before blaming Mihai Buta it would be good to differentiate... 1) Playing NOT robot tournaments, the distribution is always normal, like it was shown here. 2) Playing robot tournaments, the probability changes in my opinion (I play approximate 5-10 robot tournaments every day) dramatically. That game ISN'T a game of probability anymore, it is a diss game. A 50% chance becomes at best a 25% chance, a 75% chance becomes at best a 30% chance and so on. When i bid slams in a 8 card fit, unbelieavble often the cards in opps hands are 4/1 or even 5/0. It's extremely frustrating, to often bid very good contracts and then to go down far to often, cos probability is not ok. 3) The question is: WHY does BBO this in robot tournaments? I think i know the reason, but its only a guess, so i will not tell here.