Actually, I think that movies like Terminator serve as warnings to us. You see, AI are getting more and more intelligent. Even human chess players can't beat the super computer AI chess player any more. Well, of course, why worry? It is only chess right? But you see, can chess be considered a kind of virtual war game? Since Ai can master this virtual war game so well, who dare to guarantee that one day later AI will not master the technics of realistic wars? If their intelligence really achieve to that extent, we humans are doomed. What were showed in Terminator will happen to this world. Without us realizing, we are depending more and more to AI in our daily lifestyle. Of course, scientists make more and more intelligent AI to work for us humans to ease our burdens. It seems that their intelligence is directly proportional to our cosy lifestyle. Let us see the relation. Humans are smarter than buffaloes, hence buffaloes work for humans. AI are not smarter than humans (yet), hence AI (still) work for humans. But, what happens when AI is smarter than humans. Do you think they will still be working for us? Or vice versa?