Since slot machines have lively graphics & captivating sound effects, they initially viewed them as a kind of entertainment. They looked forward to each visit to the casino, where they would try out various machinerummy 66s in the hopes of winning. But the social experience—laughing with friends & taking in the exhilaration that permeates a casino floor—was just as important as winning. They changed their approach over time. They started learning about volatility and return-to-player percentages as they studied the workings of slot machines. With this newfound understanding, they adopted a more strategic approach rather than playing around.