A casino is a gambling establishment that has a built in advantage for the house. This advantage is known as the house edge and it is how casinos make money. The house edge is not the result of luck, but a mathematically designed advantage that allows the casino to profit over the long haul.
It is easy to be swept up by the bright lights, giveaways and bling of casinos but anyone with even a basic grasp of math or economics can figure out how it all got there. Gambling is an activity that almost everyone loses in the end thanks to the irrevocable laws of probability.
In the twentieth century, casinos have become more choosy in who they gamble with. They concentrate their investments on the high rollers, who spend far more than the average person. To attract these patrons, casinos offer them comps, like free luxury suites and lavish personal attention. To protect their profits, casinos are also becoming increasingly sophisticated in how they monitor their guests. Some have catwalks that run up the ceiling of their gaming floors and allow surveillance personnel to look down, through one way glass, at the table and slot machines.
In the United States, casinos are visited by 51 million people a year, or about a quarter of the population over 21. The majority of these visitors are from families and households with above-average incomes. However, it is estimated that the number of compulsive gamblers is on the rise and their losses are outweighing any social benefits that casinos might bring to their communities.