I guess this film, besides technology and Action, quite his philosophical approaches. The robots are servants, which will trigger the absolute rule of their masters of the people. A robot of a man he says was a violent, naked ape, before he would not kneel, that's something. And as once the Pilgrim Fathers (note how the robots are called in the film) leave the robot the old world. If the R2D2 and C3PO could experience yet .... ;-)