At the risk of beating a horse that has died a thousand deaths already I will mention a thought I had a few days ago...and not just because I'm surprised I remember something that happened that long ago. Consider the odds bet, either side. With fair dice the odds bet gives neither the house nor the player an advantage; both sides are expected to break even. Introduce a bias, any bias, and while I have not run an exhaustive analysis of all possibilities -- actually I haven't run any analysis -- I would wager a sizable sum that there would be at least one box number that would be expected to hit or miss more frequently than with unbiased dice, thereby making the odds on the appropriate side, taken or laid, player positive. Would a casino, particularly one offering a high odds multiple, really want to create such a situation?