In the film Oblivion , why would the Tet Station bother using human clones at all as part of their operational scheme? Obviously it is a pretty sophisticated AI. You'd think it could just deploy AI on the ground as well, build it right into the drones. That seems like less effort than cloning thousands of Jacks and Vikas, and far less risky. Does the comic book explain this better than the movie did? (Update: Someone pointed out that there is no comic book / graphic novel . Bummer) Answer There are no answers in canon (since no canon exists as far as I know), but we can speculate starting from what we know. While the alien AI did seem very powerful, it did seem to have some limitations. Let's look at the only completely manufactured automated units that it produces: the drones. While they are marvels of engineering they are still quite limited. They are not intelligent (they are constantly being defeated by trickery), they cannot repair themselves, and they are quite cumbers...