The biggest mistake casual gamblers make is ignoring the underlying mathematical engine that drives the slot machine. Volatility, or variance, determines the risk level of the game, indicating how often and how much the machine pays out.
Danbrownlow
Understanding the math behind the games gives gamblers a significant advantage. All bets placed on the floor inherently favor the establishment to some degree.
The standard, mathematically sound bets in table games are no longer enough to satisfy the modern, thrill-seeking casino player.