This is the worst movie Nolan has probably ever made. I am being honest, I expected this movie to be something like Inception, with a breakthrough concept, but I was disappointed.
Now I am not saying the plot should be simple to understand but this one was horrible, I mean really horrible. The concept of time inversion was okay but they implemented it in terrible way possible, added to the poor acting of the main protagonist who was looking lost, really lost in the movie.
And Half of dialogues were not even clear what they were saying. Most were irrelevant things that didn't even made sense in the plot.
The people who have 5 stars are the people who rated it so because it was a Nolan movie. I am a fan of Nolan and watched Batman Trilogy 10 times, Inception about 20 times, but part of being a movie critic is to be honest in your reviews.