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There are a few things you should know about David Mamet. This is one of the things. The thing is that there is a way his characters talk. There is a way his characters talk that is not always in the accepted idiom. It is in the idiom of Harold Pinter, as maybe rewritten by Damon Runyon's freakin' bartender.
Like so many ambitious writers, David Mamet has many faces. There's the street-smart thriller craftsman behind Homicide, Heist, and Spartan. The sly, stagey twist-meister behind House Of Games, The Spanish Prisoner, and Glengarry Glen Ross. The sentimental softie of Things Change and State And Main. (There's also the work-for-hire hack that signed onto the screenplay for Hannibal, and the clumsy, self-satisfied provocateur who wrote Oleanna, but the less said about them, the better.) But no previous project has so thoroughly fused his filmmaking facets as Redbelt, a superior, sophisticated, and unusually gentle character study where the point isn't the twists, so much as watching how one man's belief system holds up through them.