Old story but not widely known. Great stuff.
Everyone who walks through the doors of a casino is in an optimistic state of mind. The promise that they can walk out a winner is exhilarating and they convince themselves that they can do so. However, most gamblers walk out losers since every game is mathematically designed with a house edge. The following people knew this and were determined to rectify the situation. Whether it was through intelligence and cleverness, or by outright cheating, they were not going to walk out of there without a hefty profit.
