The same with teaching VP programs you can download on your computer. I once drew a high pair w/3 to the royal. When I chose 3/royal a warning screen flashed to let me know that wasn't the mathematical best choice. I overrode the program and hit the royal! I have never forgotten that event, and playing in the real casino world has convinced me it's a pseudo random generator controlled place. I don't care what the ap'ers say on this forum- math cannot replace luck.