Let me point out an analogy. For a few decades now there's been talk of replacing airline pilots with computers because the planes now can fly themselves with advanced autopilots. They can even land themselves in near zero visibility (CAT III landing equipment). The old joke is that there will only be 1 pilot and a dog in the cockpit. The pilot is there to monitor everything and the dog is there to bite him if he tries to touch anything. But of course this won't happen because humans can detect and deal with problems outside the realm of what the autopilots are programmed to do. For example, if an engine stops working, the autopilot is useless.