"Slot machines are the bread and butter of the casino industry, accounting for three quarters of casino profits. All slot machines are pre-programmed to keep a portion of the cash put into them."

"Mechanical slot machines have everything you need to known written on the front glass. You can immediately see the type, how much it costs to play, and how much you can win for each combination."

"The only game where the probabilities change is in blackjack, where every card dealt alters the probability of which card will be next. EV in blackjack can alternate between positive and negative."

"The first slot machine got the nickname 'The Bell', after the winning symbol. It was very profitable since there were a total of 10 symbols with1000 different combinations but the jackpot was only 750 coins."

"In 1930s Nevada, bingo was known as keno, and 'Chinese Lottery' was also called keno because lotteries were illegal. To further disguise it, it was called 'race-horse keno' and games were called races."