Dislikedmartingale on roulette can be pretty lucrative, but as in trading, you must use stop losses...
problem is that the wheel and ball don't understand odds, each spin is a discrete event.. with less than 50% probability on each spin, no wonder casinos are so rich...Ignored
At least if you learn black jack basic strategy, you can stay at the table for a while a little longer than just going with your gut.
Been thinking of the next strategy on roulette... playing the 1/3 sections. Each time you bet on two of the three sections (pick the one that the ball didn't land on last time).