Most of us understand the language of poker, even if we’ve never played. We know what a “poker face” is, what it means to be “all in” or to “have an ace up your sleeve.” Since Kenny Rogers’s 1978 hit song “The Gambler,” millions of Americans have been singing about poker. It is very much a game of the American West. It has the frontier spirit in it, and it is somehow about life and death and everything in between.