I decided to watch "The Card Counter" from Paul Schrader ("Taxi Driver's" script) after seeing a short bit on Netflix where the main character explains how does the card-counting in question work. I never looked into details of it and it seems to be based on a simple principle. But that's not what the movie is about. If I had to point to the main aspect it's the titular character who wants to live anonymous live. Very much like Driver from "Drive" (the book, not the movie).