Reality or a dream

Rating: 8/10 (13 May 2017)

On first view 6 years ago, I did not last more than 20 minutes. So probably 6 years is a long time, and my patience has greatly improved...
It is a fact that the human beings imagination and ability to dream is probably the most important building stone of evolution, which enables us scientific research and technological development that will eventually be the only hope for survival. Nevertheless, these dreams of non-existing (?) realities sometimes have adverse effect.
And now to the movie itself: Is this real or a dream? Maybe both? The idea is definitely not new... Total Recall (1990) for example did this long before. In this movie, the idea is beautifully presented by great directing, acting and visual effects. Also, DiCaprio is used to play the confused crazy dreamer (Shutter Island, The Aviator...), so of course he does it well.