The Martingale System (also known as the Martingale Strategy) is a risk-seeking method of investing. The main idea behind the Martingale System is that statistically, you cannot lose all of the time, and thus you should increase the amount allocated in investments—even if they are declining in value—in anticipation of a future increase.
Martingale strategies rely on the theory of mean reversion. Without a plentiful supply of money to obtain positive results, you need to endure missed trades that can bankrupt an entire account. It’s also important to note that the amount risked on the trade is far higher than the potential gain. Despite these drawbacks, there are ways to improve the Martingale Strategy that can boost your chances of succeeding. (資料來源 )
Backing red and black is a common wager on one of the most popular games in every casino, roulette. At odds of nearly 50/50 (more of that in a moment), it’s a simple bet to make and understand, and it’s easy to keep track of wins and losses.
While many players like to randomly back red or black with no apparent technique, others employ a roulette strategy for black and red. Others wait for what they think is the time to pounce and then place a bet. Doing the latter, however, is flawed logic. (資料來源 )