This is interesting subject, it caught my attention.
I'd like to see it backwards, reversed, by knowing what's your enemy you can successfully defeat him...
We are betting 2 dozens or columns, it doesn't really matter because both options have 24 numbers, so our enemy is 1 dozen or 1 column plus zero.
The maximum streak for any given dozen/column is 14 in a row, confirmed in millions of results.
What if we could overcome such negative streak in the most realistic manner?
By saying realistic I mean to recover 14 loses caused by 12 numbers with 7 wins from 24 numbers.
In other words our selection which includes double the numbers of the opposition to hit half times, how does it sound?
A progression like D'Alembert aims to stretch the recovery longe and not to look for the instant relief.
What usually kills you is sudden anomalies in the distribution, are happening out of the blue and with a steep progression you have very good chances to be destroyed.
It's like driving very fast in a road full of turns, visibility is limited and when you suddenly see something in front of you you don't have the time for brakes or manuevre.
Let's get to the point;
Example that 1st dozen hit twice in a row, trigger is been activated to bet the other 2 dozens.
Let's say first bet and win, we are +1 and wait for another trigger of a dozen or column to hit twice in a row.
But for the examples sake let's say we lose 12 times in a row, so that dozen hit 14 times in a row and we lost a total of -24 units (12*2).
These 24 units can be recovered with a streak of 7 wins like this 1 + 2 + 3 + 4 + 5 + 6 + 4 = 25 - 24 = +1
I'm talking about a positive progression which raises gradually only after winning, so no matter how many times in a row we lost, we are keeping the same bet amount, when we start winning we increase with D'alembert progression.
If our winning streak is being interrupted before we fully recover we stop betting and wait for new trigger, when trigger is being activated we are going to continue the progression where we left it, from the last lost amount till full recovery.
There is also another progression which achieves full recovery in 5 wins instead of 7 which is the case with D'Alembert.
This progression is my creation that's why I call it BlueAngel.
So this is how it goes, start from 1 unit and increasing dynamically 1 + 2 + 4 + 7 + 11 = 25 five winning streak instead of seven required with D'alembert.
If you noticed the increments are not fixed, from 1 raises 1 and betting 2 units on next level, from 2 raises 2 and betting 4 units on next level, from 4 raises 3 and betting 7 units on next level, from 7 raises 4 and betting 11 units on next level...steps to follow: 1 2 4 7 11 16 22 29 37 46
This is my positive dynamic progression which I'm applying on 2 dozens/columns as described above.