Understanding the d’Alembert System

Understanding the d’Alembert systemSince roulette was first invented people have been looking to devise clever betting systems that will take advantage of some aspect of the game and help them strike it lucky. Many of the systems invented which are still in use today, such as the Martingale System and the Fibonacci System, are known as negative progression systems. This means that a player will increase the size of the bet after a loss in an attempt to recover any money lost. While these betting systems may still be in use, players should still be wary of them and accept the fact that none of these betting systems are likely to increase a player’s odds of winning.

The d’Alembert System was invented in the late 18th century.  The system has been credited to Italian-French scientist Joseph Louis Lagrange as well as the French mathematician Jean le Rond d’Alembert. These two scientists were working on a series of laws of motion which deal with equilibrium. Some claim that these laws are a simplification of Newton’s Second Law. The laws which Lagrange and d’Alembert devised become known as the d’Alembert Principle.

Since the basis of the d’Alembert Principle is equilibrium, it can have a dangerous affect on how people view the outcome of games of chance such as roulette. According to this system, a player is just as likely to win as a player is to lose. Furthermore and due the ideas about equilibrium a player is likely to lose after a win and vice versa. This could also lead a player to conclude that after hitting a streak of black numbers, for example, the next numbers to come up are more likely to be red.

It is for this reason that a player will increase the bet after each loss as, according to this system, a player is now more likely to win. Conversely, if a player has just won the player will decrease the size of the bet as the player is more likely to lose.  This system attempts to take advantage of notions about equilibrium as well as the law of probability.

This system increases and decreases by 1 unit according to whether a player wins or loses.  It is due to this consistency that it is sometimes also referred to as the Pyramid System. The idea behind this is that generally once a player has won as many times as they have lost they will have made a profit. The beauty of this system is it simplicity. It doesn’t rely on a complicated sequence like the Fibonacci System which players could easily lose track of. It also isn’t as risky as the Martingale System where the bets increase very quickly.

Players who decide to use this betting system should remember to start with a small initial bet. This is particularly true if the player is new the game of roulette and betting systems in general. Another thing players need to keep in mind is that they should only place outside bets for example bets on red-black, even-odd etc. This is because this betting system is only effective for outside bets.  Consistency is important when using this system. So whatever a player decides to bet on at the onset (e.g. red or black) is what the player needs to bet on for the entirety of the game.

While this system may seem logical it is, in fact, highly problematic when applied to random games of chance with unpredictable outcomes like roulette. This betting system fails to take into account that each spin of the roulette wheel is unique. Therefore it is not true that if one won a round, one is likely to lose in the next. There is a chance one could win.

Another drawback of the system is that for it to be profitable a player needs to win and lose and equal number of times. This is very unlikely given the fact that with outside bets a player has an 18 in 37 chance of winning.  Players therefore need to understand that they are likely to lose more time than they win. While it is possible that some player swill recover their losses that is not true with all. Most players who use this system are more likely to walk away with losses that they were unable to recover.

Another factor players need to take into account when using any betting system is the 0 and 00 slots. These increase the houses edge. But more importantly these slots mean that any bet placed is not an outside even bet. These are the type of bets this and most other negative progression systems were designed for. What this means is that even if the betting system should work in theory you are starting at a disadvantage where the casino ends up collecting about 2.7% of all of a player’s bets.

One of the advantages of the system is that it is less risky and unlike betting systems like the Martingale System players losses increase in a slow and very contained manner.  This is a good system for players who have a limited bankroll and aren’t too experienced. For those who love the thrill of taking risks this system may be too safe and seemingly boring.

Players who choose this betting system need to keep in mind that it is unlikely to increase a player’s odds of winning. The system ignores the random and unpredictable nature of roulette and the fact that each spin of the roulette wheel is unique. As long as players aren’t looking to win big with this system it can be a fun way to play the game. The important thing is for players to go into a game with eyes wide-open knowing as much as they can about the pros and cons of the betting system they’ve chosen.

While it is important to have a good understanding of gambling systems, it’s also essential to have a solid grasp of the game. If you want to brush up on your roulette knowledge, see our essential roulette terms and our guide to debunking roulette myths.

If you’re ready to try your hand at the d’Alembert System or perhaps just want to play some good quality roulette, be sure to give Spin Palace Casino a try.


This entry was posted in Articles, Roulette and tagged , , , , , , , . Bookmark the permalink.