Oscar Goodman, who played the role of Sam’s lawyer in the movie, was a lawyer in real life too.
This is quite understandable as revealing such information would alert the casinos and make it difficult for the players to use their winning strategies. They especially did not want to talk about how they cheated casinos. But no gambler wanted to reveal his/her secrets. The producers tried their hardest to get real-life gamblers to reveal their winning strategies. The actors used the F word 435 times, which means that someone in the movie said it at least once every 3 seconds.
