In American culture, the concept of the robot has undergone changes from "Automaton" to "Robot" and then to "Cyborg", respectively mirroring the social concerns of American society in their time. The genre of "Automaton" is closely related to discussions of human-machine relations in traditional philosophy and religion and carries racial stereotypes across the American social hierarchy. The genre of "Robot" initially reflected the increasingly severe problem of technological alienation in American society at the beginning of the 20th century. Still, under the influence of American consumerism, its image was transformed from that of alienated workers to that of a metal appearance popular in contemporary science fiction. With the emergence of scientific theories such as behaviorism and cybernetics, as well as the increasing technicalization of social life, the genre of "Cyborg" became a new trend, eventually blurring the boundary between humans and machines.