Progressive betting systems in Blackjack involve adjusting your bet size based on previous outcomes, aiming to capitalize on winning streaks and manage losses during losing streaks. In positive progression systems, you increase your bet after a win and either maintain or decrease it after a loss, with systems like Paroli or the 1-3-2-6 method being common examples. Negative progression systems, such as the Martingale, involve doubling your bet after a loss, hoping to recover losses with a single win. While these systems can offer short-term benefits, they don’t change the house edge and require a significant bankroll to withstand prolonged losing streaks. Moreover, table limits can prevent aggressive strategies from working effectively. Ultimately, progressive betting is more about managing your bankroll and rhythm of betting than changing the odds of the game.