On the first case, Martingale, the guitarist doubles his bet if he seems to lose. Imagine playing a good game of blackjack while waiting to all your dentist scheduled visit. The more knowledge has the best luck just about all. Losing can't be avoided when playing activities. https://kenhtruyentranh.net/tin-tuc/cam-nang-choi-tien-len-mien-nam-tai-rikvip/31