Often in some places, people brag about their success in beating the bookies using their strategies and winning large sums of money, showing off their winnings. I often ask, "Isn't it true that casinos never lose?" They always respond with harsh words and try to justify what they think is wrong. I often ask this question to all the braggarts who intend to attract others to buy their strategies, and I really wonder why people try to make money by cheating others. But I've come to the conclusion that such people take advantage of opportunities when they can't beat the casino; at least they can beat others by cheating with fake strategies.