This system is also known as the Fibonacci Progression as it is progression based and based on Fibonacci sequence, which is a mathematical sequence of numbers where each number is the sum of the previous two numbers.

Let's take an example. If the player starts with 2, the sequence would be 2, 2, 4, 6, 10, 16, 26 and so on.

Since the present wager is always the sum of previous two wagers, it is important to start with low wagers as the numbers add up very quickly in case of continuous losses. If the number the player has bet on comes, the player has to go back two numbers in the Fibonacci sequence, as the sum was a total of the previous two numbers.

The advantage with this system is that, the bets are always kept low, unlike in the Martingale method where they double each time. But it is important to cap the losses to 5 or 6 in a row, to avoid losing a lot.

For example if the player bets two on the first bet and loses, then bets two again and loses, then bets 4 and wins, there is no loss.

The disadvantage is that if the player is on a losing streak, the losses may not be completely recovered, but can be reduced.

These systems may be helpful in allowing players play a more methodical game, but they will not alter the fundamental odds of the player at the table.