you create many of them in a very short time , you never learn anything about them , yet you expect them to do your bidding , because you made them and you therefore think you own them ; you forget that they are alive , they have an intelligence of their own , and they may not do your bidding , and you forget how little you know about them , how incompetent you are to do the things that you so frivolously call simple ... . dear god ... '' he sank back , coughing .