The point I am trying to make, albeit badly, is not in the AI potential of the robot or drone. It has to do with how we weigh the relative value of human lives on this planet.
Anytime we decide to kill or torture somebody, we have made a conscious decision regarding the value, or lack thereof, that their life possesses. Drones are a particularly relevant concern here. Usually, historically, and generally - if you wanted to kill somebody with your military you had to really want to do it. The person being killed had to be so dangerous that the military was willing to risk whichever members of its own organization were going to be sent on a likely dangerous trip to conduct the killing. An execution was not without risk, you had to really mean it. Drones are a technological innovation that skews this scale. If you can just send a glorified remote controlled airplane to do your dirty work, you can kill about whoever you want with nearly zero risk to the lives of those people who you value more. The decision to kill is now cheaper. You don't have to "mean it" nearly as much before deciding to go ahead and remove somebody from the planet. That makes life in general less valuable, and it's a reasonable point of discussion.
As I Robot pertains to this, what we build is a pretty good indicator of how we think. If we were to build something like the robot from that movie, we would have built something that views human life in an almost entirely egalitarian fashion. Laudable, no? Saving the older man, because it is more likely to be successful, rather than the young girl is an entirely egalitarian concept. He's somebody's father/brother/lover/son too. That decision is supposed to make us feel a little bad, as Formy correctly points out, because egalitarian or not it seems like the less human(and probably) wrong choice to make. It should have tried to save the little girl, because we value her more. That's a somewhat dicey path to trod upon though, if not immediately obvious, when saying "of course innocent little girls are worth more than jaded middle-aged men." It's the same path that eventually leads, should we choose to walk upon it, to us making decisions like "Killing this dangerous man in Yemen isn't worth risking the life of a US Marine. He's worth so little that he can be exterminated like an insect."