It was cinematic genius. Imagine a robbery. Well, he decided to build an entire movie based on 1985 convenience store security techniques. Now that's innovation. Maybe too experimental.
Experiments are always risky.
The farther they are from the traditional methodology, the greater the risk, because it is difficult to keep in emotional contact with your audience when you decide to throw out every rule at once and leave everyone disoriented. He used four different camera shots in the four corners of the screen. There was no real script. The actors improvised around a predetermined structure. Therefore, the timing of certain incidents had to be perfect, so that the images would match up.