Another one, I socket 6x enchantment stone with "success rate: 80". Expected outcome: 0, 1 or 2 fails, highest probability for 1 fail. Guess what happened? 4 fails. Chance for this to happen would be 1%. Now, I could just be really unlucky and hit that 1%. Except a "really unlucky" event happens literally every time I socket or enchant anything.