Westworld (Sky Atlantic, Tuesdays, 9pm) was a movie before it was a television show, and the difference between the two illustrates how far we’ve come. The plots are essentially the same. A corporation opens a Western-themed amusement park staffed by robots, a place where ordinary human beings can live out their fantasies – violent, sexual, sadistic or even humane and romantic. Something goes wrong; the robots run amok. The 1973 movie was a warning about the dangers of technology. Automation contains possibilities but also risks. Our dependence on robots was something to be feared.