i have a friend who worked as a croupier. he swore blind that the good ones could get the ball to land in certain areas. i dismissed it til we went to a casino one night. we stood up above a roulette table where there was one guy playing solo. when my mate saw the patterns the guy was betting he was telling me roughly where the ball would be landing, taking into account sections on the wheel. he was calling it pretty acurately. no more roulette for me.