I don't know, I'm no expert, but I feel like employing this strategy with games where the house has an edge (basically all casino games), especially those games based purely on luck, is a really bad idea. Sure you might get lucky a few times, and boost your positivity bias enough to keep trying it and chasing that win, but in the end I feel like it's just a great way to fast track losing your bankroll. Now - if you have a system and starting bet amounts where doubling those won't break you, then maybe go for it. But overall I think this system is something most (if not all) newbies or recreational players should just steer clear of.