Congratulations Aphe, If 50 straight heads came up in a row. You would indeed be asking yourself if the games was rigged. A gambling man should always know that the game is not to pick the correct side of the coin, but if fact to take the money off the guy flipping the coin. Does fifty straight heads change the odds of the the next coin flip, you bet it does. The guy flipping the coin has a vested interest in you picking the wrong side. So probability is not always enough. Rat ass cunning can play a part too. Runningbear