The plot of this movie is a paradox in itself but in a good way. Not many movies can make you confused and still keep you Intrigued at the same time. Props to everyone who worked on this. From the screenwriters to the directors, the crew and the actors who brought this story to life.
I don't know if anyone else noticed this, but Kat was jealous of the freedom her future self had. I think this is a way of telling us that if we knew how our future looked, we would be so envious of it.