It has long been the development of artificial intelligence. We've all seen the movie "Terminator" and we know where it may lead. On the other hand for a person is very attractive to shift all the work to robots. You for which option?
I'm all for Artificial Intelligence, as long as it's used wisely. Itd probably be really useful operating machines at a factory, but Id never want it doing something like driving me (Id hate to die in a crash because it took a wrong turn) or any kind of combat (oh look, it just killed the wrong target 
).