Mamet is intrinsically the classical playwright. Things may change in life but the classical playwright begins the story with a shoe shine setting up his corner in the cobbler's shop and ends the story with a shoe shine. Even the mid-point of the film, when the 3 day dream is about to end, there is the short lecture on how to shine shoes.
Though all the actors provide commendable performances, the flow of the story is absorbing. There is a layer of human values and honesty that permeates the world of murders and mafia thugs. Mamet is able to use such contradictions to great effect--threats stated with considerable politeness, women who are apparently in charge (the woman overseeing the arrangements for the meal at the house, the mafia wife/moll in blue) and yet play no significant role, teasing the viewer as it were, use of hats and newspapers to cover faces that seem ridiculous as the story unfolds..
The epilogue makes you wonder if things do change. Change for one may not be change for another. Change for one may come in economic terms, for another in friendship.
Early Mamet's work seems to neglect women characters. I wonder why this is so evident.