Chaos theory is applied to roulette outcomes by suggesting that even the smallest variations in the wheel's environment, such as slight changes in the ball’s speed, the force of the spin, or the surface texture of the wheel, can lead to vastly different results. According to chaos theory, these tiny fluctuations can create unpredictable, yet deterministic, patterns that could theoretically be analyzed to predict outcomes. However, due to the complexity and sensitivity of the system, accurately predicting where the ball will land is virtually impossible in practice.