Pictures above show why Eagleeye/Harley really doesn't know his ass from his elbow on the subject of bias dice. He thinks he can identify bias dice with a very limited amount of rolls. The reality is you will see MANY sequences (above) that defy logic, defy rationalization, defy the "norms" that people think should take place on the felt as far as results. These results happen....and more than people think. I'm not sure what the number is that one can determine actual bias dice...I can guarantee you that you will not spot it during a session....and even more so with 5 different dice in play. Beyond that, I'll wager that if you had five sets of dice....one bias set and four good---that you could not distinguish the bias dice from the non bias even over 1,000 rolls. No chance.