Sometime in the distant future, maybe the year 3225 or so, when historians are studying ancient Western society (or what will be ancient Western society by the time), they will marvel at one particular human enterprise perhaps more than any other: the epic, money-sucking efficiency of casinos. 

The way casinos have turned the act of separating us from our money into such a marvel of precision and ingenuity is every bit as awe-inspiring as the Egyptian pyramids.

“I could give you a guaranteed method to go into a casino and come out with a small fortune: go in there with a large one,” laughs Sal Piacente, a former casino dealer and security staffer who now runs UniverSal Game Protection Development, a company that trains casino staff members. He and other casino insiders know that casinos exist to not only take our money, but to keep as much of theirs as possible — both by offering games that are tilted in the house’s favor and by having air-tight security measures designed to catch thieves and cheaters.

So Yahoo Travel talked to Sal and other casino experts with decades of experience in the industry to get some dirty little secrets of casinos. Not only are these secrets juicy — knowing them might help you keep a little bit more of your money during your next casino trip. But probably just a little bit.