A betting system is a rule for changing your bet size based on the last result: double after a loss, add a unit after a win, step down after two wins, and so on. There are hundreds. They share one property, which is that none of them changes the amount the house keeps — that is fixed by the game, as explained in why betting systems cannot beat the RNG. But they are not all the same in practice, and the difference is how long your chips last.
The same loss, shaped differently
Suppose a game keeps 2% of every chip wagered. Bet a flat 10 chips for 100 rounds and you have wagered 1,000; expect to be down about 20. Now run the Martingale — double after every loss — for the same 100 rounds. You will wager far more than 1,000 in total, because the doubled bets pile up, so the expected loss is larger in absolute terms. But the shape is what matters: most sessions you finish slightly up, having won a great many one-unit pots, and occasionally a session ends with a run of losses that costs you 640 chips in a single bet you cannot afford to follow.
The system did not create the edge. It moved the edge from a steady trickle into a rare flood. The average is the same or worse. The experience is: many small wins, then ruin.
Why the flat bet lasts longer
Chips last as long as your bets are small relative to your stack. A flat bet keeps that ratio constant: a 10-chip bet is always one percent of a 1,000-chip stack. A progression makes the ratio explode exactly when you can least afford it — after losses, when the stack is already smaller and the bet is already larger. Seven losses in a row, which a hundred bets will typically produce, takes a Martingale from 10 to 1,280 chips on the next bet. The flat bettor is down 70. The system bettor is down 1,270 and staring at a bet they cannot make.
The table limit is not the reason
People blame the table maximum for the Martingale's failure. It is the wrong culprit. Remove the limit and give the player infinite chips and the system does work — for a player with infinite chips, who did not need it. For anyone with a finite stack, the doubling sequence reaches a bet larger than the stack within a streak of ordinary length, and that is the end, limit or no limit. The stack is the limit.
Sizing that actually helps
There is no bet size that beats the edge. There are sizes that lose to it gracefully. A useful rule for play sessions: never bet more than one to two percent of the chips you brought on a single hand or spin. At that size, the run of losses that ruins a system bettor costs you a tenth of your stack and you are still playing. It also makes the number in setting a bankroll limit mean something: a limit is only a limit if a single bad hand cannot blow through it.
The one honest use of a progression
Entertainment. If you enjoy the rhythm of pressing after a win or the drama of a doubled bet, and you are playing chips you have already decided to lose, a system is a way to play. Just be clear about what it is buying. It is not buying a better result. It is buying a different-shaped session — and the shape it buys is usually the one that ends early.
