This is a great movie since it's well narrated and takes both sci-fi and romance equally upto the mark.it tells what ai intelligence can do but yeah if you look at the practical side it's not possible because ai intelligence is a problem solving intelligence as its poured with all the information and knowledge. that millions of people can't hold together but still in this movie the ai is creating complications and not solving them which is impossible.But on the basis of entertainment its a great movie.