A lot of gamblers and system players don't understand that roulette outcomes are independent, and have a hard time accepting the fact that using triggers and waiting for virtual losses or extreme events has no affect on their chances of winning. If this sounds like you, do yourself a favor and learn how to correctly test for independence.

There really should be no need for this in roulette, because it's clear that past spins don't indicate future spins (the same number of pockets on the wheel remain between spins) but maybe numbers will convince you if basic logic doesn't.

This is the correct way to test for independence:

https://www.youtube.com/watch?v=n7dIl2KbrO8The example in the vid has nothing to do with roulette, but the methodology is exactly the same. Suppose you believe that if a dozen doesn't appear in the last 4 spins then it is more likely to occur in the next 4 (this is based on an actual example posted by a member recently). Draw up a table like the one in the video, but with these labels:

APPEARS DOESN'T APPEAR TOTAL

------------------------------------------------------------------------------------------------------

MISSING X Y T

_{m}------------------------------------------------------------------------------------------------------

PRESENT Z W T

_{p}------------------------------------------------------------------------------------------------------

TOTAL T

_{a } T

_{d} T

------------------------------------------------------------------------------------------------------

Now get some roulette spins and look at sequences of 4 spins at a time. For the first 4 spins:

if the dozen is present but missing from the next 4 spins, add 1 to the cell marked W.

if it is present and also appears in the next 4 spins, add 1 to the cell marked Z.

If it is missing in the first 4 spins but appears in the next 4, add 1 to the X cell.

if it is missing in the first 4 and doesn't appear in the next 4, add 1 to Y cell.

Continue like this until you have a reasonable amount of data, then fill in the totals. Then test for independence as instructed in the vid. Please post your results here for all to see.

Feel free to substitute your own bet if you don't like the example of a dozen in 4 spins. The procedure is the same.