Say that robots replace a significant number of laborers in the workplace; our economic structure could shift dramatically. If medibots administer health care to us in homes, clinics and hospitals, our notions of medicine and health maintenance may need to be restructured. If lovebots — in the form of pets or pals or prostitutes — provide "love" to humans, our sense of intimacy might go through radical changes. And if drones routinely monitor human activity, our sense of privacy — and perhaps our very behavior — may be altered.