USA Today – Gambling is the reason Las Vegas (in its modern incarnation) exists. It is the industry that fuels the local economy, paves the roads and gives the city its identity. To visitors and tourists, gambling may be a game. To those who derive their livelihood from gambling, however, it is serious business. There is an extraordinary and interesting dichotomy in the ways gambling is perceived. To the tourist and the recreational gambler, gambling is all about luck. To those in the business, gambling is about mathematics. To the visitor, gambling is a few hours a day, while to…