GitS:SAC borrows a lot of the philosophical musings from the original film and manga, but it goes a long way into further developing this particular world and showing the various ways that technology interferes and redefines what is human. All this is explored both in the series' core "complex" episodes, as well as its "stand alone episodes", which show one different story at a time. If you are interested in non politically correct, thoughtful futurism, this is the show for you. It covers issues like AI, body augmentation, the roots of self-conscience, evolution and so on. I really like the fact that it also explores the political landscape of this not so distant future. Overall, a great experience.