I say Biased Shooters and list reasons why. Take a pair of identical Casino Dice. Assume they are Biased or NOT Biased. They are Certified Perfects. Now you are exhibiting your Bias. Either the outcomes are influenced by the Shooter, or by the Dice. Take a pair of identical Casino Dice, one Red and one Green. Shoot. After ten rolls, can you determine which is Biased, or not Biased? Take a pair of Certified Perfect Casino Dice. One is a 3/4 inch die. The other a 5/8 inch die. Can you determine which is biased after ten rolls? Two different dice sizes. Does SIZE create Bias, or not? Take TWO BIASED Dice. Remove one and replace it with a die that you feel is NOT Biased. Does that make the outcomes BIASED? Can you take advantage of the Biased Die and the NON Biased Die? Take Two Certified Perfect dice the same size, same color. Set them and deliver them to the opposite end of the table. Are outcomes that were expected, generally following your sets and delivery? Take Two Certified Perfect dice, one .750 inch and the other .775 inch. Does size create Bias? Is a larger die more likely to be more or less Biased than the smaller die? Take to 5/8 inch dice. Any color. Are smaller pairs of dice more or less likely to be Biased in favor of the Casino, or the Player? If either. Why? The Casino cannot change the table's rules, yet the Player can play the OPPOSITE game of Don't Pass or Pass Line Systems. Why would Bias Dice be introduced BY the Casino, be to the Casino's advantage? If anything, this would be an advantage to an 'advantage Player'. But since the vast majority of Craps Players are Pass Line Players... on the high House Advantage side of wagering Less to win More... they are Biased that Biased Dice favor the Player... but not the Casino? I doubt this theory entirely. Obvious superstition. My expectation is that the Player is Biased towards Dice being used. Not because of winning, NON Biased Dice... but because of LOSING, Biased Dice. Size, color, table surface or delivery of a pair of dice at a Craps Table will negate any perceived BIAS simply by the delivery and impact upon any surface. Even if a pair of Dice were BIASED... it will never can be documented through prolific note taking or watching. Each Player delivers a pair of dice differently. Even a DI that sets perfect Certified Dice cannot alter the outcomes of those that may have a Bias, or not. It does not matter. What do you say?