In reality, it is impossible to predict with any degree of accuracy the outcome of any spin of a roulette wheel. It is true that of the 38 sectors of a roulette wheel there is a chance that the ball will land in certain sectors more frequently than others, but this is not to be misinterpreted as a pattern of any kind but simply the result of a random occurrence.
One of the fundamental basic rules of a roulette wheel is the most misunderstood. The wheel itself, assuming it is level and unbiased, cannot produce a specific result at any given time. The only way a roulette spin can be manipulated is if the table is biased and/or the croupier or person placing the ball is involved in some form of dishonest activity.
Theoretically, it is quite possible to place a bet on Red or Black on the understanding you have a 50% chance of winning on either, and lose for an infinite number of spins. This is simply because; every spin of the wheel is as random as the last. The roulette wheel itself has no recollection, or memory of previous spins, keeps no record of previous spins and does not spin a specific number or colour simply because it hasn't won for any given length of time. The law of probability attempts to contradict this occurrence, but is unable to prove to the contrary, simply because each new spin of a roulette wheel is a completely new event. Past and indeed future spins will not influence the result and cannot be influenced by previous results.
The extended use of any formulated strategy or betting pattern will produce the same results as wearing your lucky shirt, carrying a lucky rabbit's foot, or a four leaf clover. The only claims that the majority of roulette strategies or betting patterns can make with any degree of certainty, is that they often provide the reader with a better understanding of the tables betting odds.