Good concept, poorly executed.

All that we are seeing on the screen is happening with real people, real action sequences in the background, forcing the eye to watch as if we were there.

A great movie, one of the best of this year. There was a bit of confusion at one point in the plot, but nothing serious.

One of the film's great tricks is that, for a time, you think it will go down a rabbit hole of unrealistic glorification.