Reno The Biggest Small City The World
The positive progression of betting is one of the roulette strategies used by may players.
I would undoubtedly favor an 81.5% chance of winning to taking a group of shots in the dark. The systems that they used are based on the fact that roulette tables are not perfect and small deviations in the angle it tilts or if it becomes slightly unbalanced can effect where the ball lands.
The U.S.government was doing this since 1969.