Kubrick very purposefully handed this project to his friend with a very specific outline (including musical scores) to be completed after his death. One of his underlying themes is to question the very emotional agenda informing the majority of films, and certainly those of Spielberg. On one level the movie is a debate over our motivations for going to the movies, whether to open ourselves to unique points of view or merely to have our familiar button's pushed?
The tension comes to a crest in the last scene, which has sparked numerous debates and harsh criticism, but which embodies the movie's essential paradox. Some have criticized it for catering to Spielberg's emotional agenda by leaving us on a note that's overly sentimental. With the exception of this film, I've often thought that Spielberg's films would benefit by cutting out the last 15 minutes of 'tying it all up.) I believe, however, that this conclusion is inevitable to the degree that we identify with the character of the automata (played brilliantly by the young Haley Joel Osmet) instead of seeing that the overall outlook of the film, from the beginning shots of a drowned city to the final one of the lights going out, is that humanity is quite likely a species doomed to be a figment of memory in an otherwise indifferent universe..