However, it's important to note that the house always has an edge in roulette, as with most casino games, to ensure that over time, the casino will make a profit. Outside of a poorly trained or bored dealer spinning the wheel and ball exactly the same, with exactly the same release, Roulette is random.

Atmospheric conditions continually change and the wheel itself has features that encourage randomness  such as the size of the frets between the numbers and the diamond-shaped obstacles that intercept the ball as it falls down to the wheel. This means that you cannot predict the exact number where the ball will land.